List of applications/Documents

Internet – Multimedia – Utilities – Documents – Security – Science – Other

Documents and texts

Text editors

Some of the lighter-weight Integrated development environments can also serve as text editors.

Vi-style text editors

Amp — Text editor written in Rust, that aims to take the core interaction model of Vim, simplify it, and bundle in the essential features required for a modern text editor.

https://amp.rs/ || amp^AUR

BusyBox vi — Provides "a small 'vi' clone". Can be invoked with busybox vi.

https://git.busybox.net/busybox/tree/editors/vi.c || busybox

Kakoune — Modal editor. Fewer keystrokes. Selection based, multi-cursor editing. Orthogonal design.

https://github.com/mawww/kakoune || kakoune

Helix — A post-modern modal text editor.

https://helix-editor.com/ || helix

Neovim — Vim's rebirth for the 21st century.

https://neovim.io/ || neovim

Neovim-Qt — Qt GUI for Neovim.

https://github.com/equalsraf/neovim-qt || neovim-qt

vi — The original ex/vi text editor.

http://ex-vi.sourceforge.net/ || vi

Vim — Advanced text editor that seeks to provide the power of the de-facto Unix editor 'vi', with a more complete feature set.

https://www.vim.org/ || with GUI: gvim, without GUI: vim

Vis — Modern, legacy free, simple yet efficient vim-like editor.

https://github.com/martanne/vis || vis

Emacs-style text editors

Emacs — The extensible, customizable, self-documenting real-time display editor by GNU.

https://www.gnu.org/software/emacs/emacs.html || with GUI: emacs, without GUI: emacs-nox

mg — Small, fast, and portable Emacs-like editor.

https://github.com/hboetes/mg || mg

vile — Lightweight Emacs clone with vi-like key bindings.

https://invisible-island.net/vile/vile.html || vile^AUR

Zile — Lightweight Emacs clone.

https://www.gnu.org/software/zile/ || zile

Console

dte — Small, easy to use editor with multi-tabbed interface, syntax highlighting, ctags navigation, etc.

https://craigbarnes.gitlab.io/dte/ || dte^AUR

e3 — Tiny editor without dependencies, written in assembly.

https://sites.google.com/site/e3editor/ || e3

ee — Classic curse-based text editor. Born in HP-UX, used in FreeBSD.

https://web.archive.org/web/20160719002816/http://www.users.qwest.net/~hmahon/ || ee-editor^AUR

JED — Text editor that makes extensive use of the S-Lang library. Includes a console version (jed) and an X-window version (xjed).

http://jedsoft.org/jed/ || jed^AUR

JOE (Joe's Own Editor) — Terminal-based text editor designed to be easy to use.

https://joe-editor.sourceforge.io/ || joe^AUR

mcedit — Useful text editor that comes with Midnight Commander file manager.

https://www.ibiblio.org/mc/ || mc

micro — Modern and intuitive terminal-based text editor, written in go and extensible through plugins.

https://micro-editor.github.io/ || micro

Minimum Profit — Text editor for programmers.

https://triptico.com/software/mp.html || mp^AUR

nano — Console text editor based on pico with on-screen key bindings help.

https://nano-editor.org/ || nano

ne — Minimalist text editor with Windows-like key-bindings.

http://ne.di.unimi.it/ || ne^AUR

ScalpiEditor — ANSI only text editor without dependencies designed for folder-like navigation in code.

https://github.com/sergey6661313/ScalpiEditor || not packaged? search in AUR

slap — Sublime-like terminal-based text editor.

https://github.com/slap-editor/slap || slap^AUR

Tilde — Intuitive text editor with Windows-like key bindings.

https://os.ghalkes.nl/tilde/ || tilde^AUR

Graphical

Acme — Minimalist and flexible programming environment developed by Rob Pike for the Plan 9 operating system.

http://acme.cat-v.org/ || plan9port

Adie — Fast and convenient programming text editor.

http://fox-toolkit.org/ || fox

Atom — Promising text editor developed by GitHub. With support for plug-ins written in Node.js and embedded Git Control.

https://atom.io/ || atom

Beaver — GTK editor designed to be modular, lightweight and stylish.

http://beaver-editor.sourceforge.net/ || beaver^AUR

Brackets — Code editor for the web, written in JavaScript, HTML and CSS.

https://brackets.io/ || brackets^AUR

CorePad — Simple lightweight but powerful text editor with syntax-highlighting support for a dozen or more languages. Part of C-Suite.

https://cubocore.org/ || corepad^AUR

Deepin Text Editor — Simple text editor for Deepin desktop.

https://www.deepin.org/en/original/deepin-editor/ || deepin-editor

Ecrire — Simple text editor based on EFL.

https://git.enlightenment.org/apps/ecrire.git/ || ecrire-git^AUR

Enki — Text editor for programmers.

http://enki-editor.org/ || enki-editor^AUR

FeatherPad — Minimal Qt5 plain text editor featuring a native dark theme and support for tabs, printing and syntax highlighting.

https://github.com/tsujan/FeatherPad || featherpad

FLTK Editor — Simple text editor application for FLTK.

https://www.fltk.org/ || fltk-editor^AUR

gCSVedit — Simple text editor for CSV, TSV and other kinds of delimiter-separated values (DSV) files.

https://github.com/swilmet/gCSVedit || gcsvedit^AUR

gedit — GTK editor for the GNOME desktop with syntax highlighting, automatic indentation, matching brackets, etc., and a number of add-ons to increase functionality.

https://wiki.gnome.org/Apps/Gedit || gedit

GNOME Text Editor — Simple text editor for GNOME focused on a pleasing default experience.

https://gitlab.gnome.org/GNOME/gnome-text-editor || gnome-text-editor^AUR

Gobby — Collaborative editor supporting multiple documents in one session and a multi-user chat.

https://gobby.github.io/ || gobby

Howl — General purpose, fast and lightweight editor with a keyboard-centric minimalistic user interface.

https://howl.io/ || howl

jEdit — Text editor for programmers, written in Java.

http://www.jedit.org/ || jedit^AUR

JuffEd — Simple tabbed text editor with syntax highlighting, written in Qt.

http://juffed.com/en/index.html || juffed^AUR

Kate — Full-featured programmer's editor for the KDE desktop with MDI and a filesystem browser.

https://kate-editor.org/ || kate

KWrite — Lightweight text editor for the KDE desktop that uses the same editor widget as Kate.

https://apps.kde.org/kwrite/ || kwrite

L3afpad — Simple text editor forked from Leafpad, supports GTK 3.

https://github.com/stevenhoneyman/l3afpad || l3afpad

Leafpad — Notepad clone for GTK that emphasizes simplicity.

http://tarot.freeshell.org/leafpad/ || leafpad

Light Table — Next generation code editor that connects you to your creation with instant feedback.

http://lighttable.com/ || lighttable-bin^AUR

Liri Text — Text editor for Liri.

https://github.com/lirios/text || liri-text

medit — Programming and around-programming text editor.

http://mooedit.sourceforge.net || medit^AUR

Mousepad — Fast text editor for the Xfce Desktop Environment.

https://www.xfce.org || mousepad

NEdit — Text editor for the Motif environment.

https://sourceforge.net/projects/nedit/ || nedit^AUR

Notepadqq — Qt-based, Notepad++-like text editor with support for syntax highlighting for more than 100 languages.

https://notepadqq.com/s/ || notepadqq

Nota — Easy to use text editor with a simple interface with support for tabbed documents, syntax highlighting for various languages, Focus mode, annotations, configurable fonts, and colors, a side panel with an integrated file browser, and more.

https://mauikit.org/ || maui-nota

Pantheon Code — Code editor for elementaryOS. It auto-saves your files, meaning they are always up-to-date. Plus it remembers your tabs so you never lose your spot, even in between sessions.

https://github.com/elementary/code || pantheon-code

Pluma — Powerful text editor for MATE.

https://mate-desktop.org/ || pluma

QSciTE — Qt clone of the SciTE text and code editor.

https://code.google.com/archive/p/qscite/ || qscite^AUR

Sam — Minimalist text editor with a graphical user interface, a very powerful command language and remote editing capabilities, developed by Rob Pike.

http://sam.cat-v.org || plan9port or 9base

SciTE — Generally useful editor with facilities for building and running programs.

https://scintilla.org/SciTE.html || scite

Sublime Text — Proprietary C++ and Python-based editor with many advanced features and plugins while staying lightweight and pretty.

https://www.sublimetext.com/ || version 3: sublime-text-dev^AUR, version 4: sublime-text-4^AUR

Tau — Minimal GTK front end to the xi editor core written in Rust.

https://gitlab.gnome.org/World/Tau || tau-editor^AUR

TEA — Qt-based feature-rich text editor.

http://semiletov.org/tea/ || tea-qt^AUR

Textadept — Lua-extensible feature rich text editor based on Scintilla and written in C.

https://foicica.com/textadept/ || textadept^AUR

Textosaurus — Simple cross-platform text editor based on Qt and QScintilla.

https://github.com/martinrotter/textosaurus || textosaurus^AUR

Visual Studio Code — Editor for building and debugging modern web and cloud applications.

https://code.visualstudio.com || code

xed — Text editor based on Pluma developed for Linux Mint.

https://github.com/linuxmint/xed || xed

XEdit — Simple text editor for the X Window System.

https://www.x.org/wiki || xorg-xedit

wxMEdit — Text/Hex editor written in C++ and wxWidgets.

https://wxmedit.github.io/ || wxmedit^AUR

Office

Office suites

Calligra — Actively developed fork of KOffice, the KDE office suite. It offers most of the features of OpenOffice while also having versions for smartphones (Calligra Mobile) and tablets (Calligra Active).

https://calligra.org/ || calligra

LibreOffice — The office productivity suite compatible to the open and standardized ODF document format. Fork of OpenOffice, supported by The Document Foundation.

https://www.libreoffice.org/ || libreoffice-still or libreoffice-fresh

OnlyOffice — Office suite that combines text, spreadsheet and presentation editors.

https://www.onlyoffice.com/ || onlyoffice-bin^AUR

OpenOffice — Open-source office software suite for word processing, spreadsheets, presentations, graphics, databases and more, under the Apache Licence.

https://www.openoffice.org/ || openoffice-bin^AUR

SoftMaker Office — Complete, reliable, lightning-fast and Microsoft Office-compatible proprietary office suite with a word processor, spreadsheet, and presentation graphics software.

https://www.freeoffice.com/ || freeoffice^AUR

WPS Office — Proprietary office productivity suite, previously known as Kingsoft Office.

https://www.wps.com/ || wps-office^AUR

Yozo Office — Proprietary office suite, compatible with MS Office.

https://www.yozosoft.com/product-officelinux.html || yozo-office^AUR

Word processors

AbiWord — Full-featured word processor.

https://www.abisource.com/ || abiword

Calligra Words — Powerful word processor included in the Calligra Suite.

https://www.calligra.org/words/ || calligra

LibreOffice Writer — Full-featured word processor included in the LibreOffice suite.

https://www.libreoffice.org/discover/writer || libreoffice-still or libreoffice-fresh

OpenOffice Writer — Full-featured word processor included in the OpenOffice suite.

https://www.openoffice.org/product/writer.html || openoffice-bin^AUR

Ted — Easy to use GTK-based rich text processor (with footnote support).

https://nllgg.nl/Ted/ || ted^AUR

WordGrinder — Word processor for the console.

https://cowlark.com/wordgrinder/ || wordgrinder^AUR

WYSIWYG HTML editors

PageEdit — ePub visual XHTML editor.

https://github.com/Sigil-Ebook/PageEdit || pageedit

SeaMonkey Composer — Powerful yet simple HTML editor included in the SeaMonkey suite.

https://www.seamonkey-project.org/ || seamonkey

Desktop publishing

gLabels — Program for creating labels, business cards and media covers.

http://glabels.org/ || glabels

Scribus — Desktop publishing program. Uses hyphen and its language packs for hyphenation.

https://www.scribus.net/ || scribus

Presentations

Calligra Stage — Easy to use yet still flexible presentation application included in the Calligra Suite.

https://www.calligra.org/stage/ || calligra

LibreOffice Impress — Presentation program included in the LibreOffice suite.

https://www.libreoffice.org/discover/writer || libreoffice-still or libreoffice-fresh

MDP — A command-line based markdown presentation tool.

https://github.com/visit1985/mdp || mdp

OpenOffice Impress — Presentation program included in the OpenOffice suite.

https://www.openoffice.org/product/impress.html || openoffice-bin^AUR

sent — Simple plaintext presentation tool.

https://git.suckless.org/sent/ || sent^AUR

Sozi — Zooming presentation editor and player. Based on the Electron platform.

https://sozi.baierouge.fr/ || sozi^AUR

Spice-Up — Create simple and beautiful presentations.

https://github.com/Philip-Scott/Spice-up || spice-up

Spreadsheets

Calligra Sheets — Powerful spreadsheet application included in the Calligra Suite.

https://www.calligra.org/sheets/ || calligra

Gnumeric — Spreadsheet program for the GNOME desktop.

http://www.gnumeric.org/ || gnumeric

LibreOffice Calc — Full-featured spreadsheet application included in the LibreOffice suite.

https://www.libreoffice.org/discover/calc/ || libreoffice-still or libreoffice-fresh

OpenOffice Calc — Full-featured spreadsheet application included in the OpenOffice suite.

https://www.openoffice.org/product/calc.html || openoffice-bin^AUR

Pyspread — Pyspread is a non-traditional spreadsheet application that is based on and written in the programming language Python.

https://manns.github.io/pyspread/index.html || pyspread^AUR

sc — Curses-based lightweight spreadsheet.

https://ibiblio.org/pub/linux/apps/financial/spreadsheet/!INDEX.html || sc

sc-im — Spreadsheet program based on sc.

https://github.com/andmarti1424/sc-im/ || sc-im^AUR

Database tools

For DBMS-specific tools, see:

Adminer — Full-featured database management webapp with support for many database types.

https://www.adminer.org/ || adminer^AUR

DBeaver — Java-based graphical database editor with support for many database types.

https://dbeaver.io/ || dbeaver

DbVisualizer — The Universal Database Tool

https://www.dbvis.com/ || dbvis^AUR

GdaBrowser — Graphical tool to get a quick access to a database's structure and contents.

https://www.gnome-db.org/GdaBrowser || libgda

GSQL — Integrated database development tool for GNOME. Last released in 2010.

http://gsql.org/ || gsql^AUR

Kexi — Visual database applications creator tool by KDE, designed to fill the gap between spreadsheets and database solutions requiring more sophisticated development.

http://kexi-project.org/ || kexi

LibreOffice Base — Full-featured desktop database front end included in the LibreOffice suite, designed to meet the needs of a broad array of users.

https://www.libreoffice.org/discover/base/ || libreoffice-still or libreoffice-fresh

OpenOffice Base — Full-featured desktop database front end included in the OpenOffice suite, designed to meet the needs of a broad array of users.

https://www.openoffice.org/product/base.html || openoffice-bin^AUR

Orbada — Excellent tool for database developers, SQL developers, DBA administrators, as well as for users who wish to broaden their knowledge and skills in SQL.

https://orbada.sourceforge.io/ || orbada^AUR

Sequeler — SQL client built in Vala and Gtk. It allows you to connect to your local and remote databases, write SQL in a handy text editor with language recognition, and visualize SELECT results in a Gtk.Grid Widget.

https://github.com/Alecaddd/sequeler || sequeler^AUR

SQuirreL SQL Client — Graphical Java program that will allow you to view the structure of a JDBC compliant database, browse the data in tables, issue SQL commands etc.

http://www.squirrelsql.org/ || squirrel-sql^AUR

TOra — Database management GUI that supports accessing most of the common database platforms in use, including Oracle, MySQL, and PostgreSQL, as well as limited support for any target that can be accessed through Qt's ODBC support.

https://github.com/tora-tool/tora/wiki || tora^AUR

Simplified database software

Glom — Easy-to-use database designer and user interface.

https://gitlab.gnome.org/GNOME/glom/ || glom

Symphytum — Personal database software for everyone who desires to manage and organize data in an easy and intuitive way, without having to study complex database languages and software user interfaces.

https://github.com/giowck/symphytum || symphytum

TreeLine — Store almost any kind of information in a tree structure, which makes it easy to keep things organized.

https://treeline.bellz.org/ || treeline^AUR

Formula editors

LibreOffice Math — Create and edit scientific formulas and equations. Included in the LibreOffice suite.

https://www.libreoffice.org/discover/math/ || libreoffice-still or libreoffice-fresh

OpenOffice Math — Create equations and formulas for your documents. Included in the OpenOffice suite.

https://www.openoffice.org/product/math.html || openoffice-bin^AUR

Markup languages

Sphinx — A documentation generation system using reStructuredText to generate output in multiple formats (primary documentation system for the Python project).

https://www.sphinx-doc.org/ || python-sphinx

txt2tags — Dead-simple, KISS-compliant lightweight, human-readable markup language to produce rich format content out of plain text files.

https://txt2tags.org/ || txt2tags

AsciiDoc

Markdown

See also the official website and Wikipedia:Markdown.

Discount — A Markdown implementation written in C.

https://www.pell.portland.or.us/~orc/Code/discount/ || discount, Ruby wrapper library: ruby-rdiscount

lowdown — Markdown translator producing HTML5 and roff documents in the ms and man formats.

https://kristaps.bsd.lv/lowdown/ || lowdown

Marked — Markdown parser and compiler built for speed.

https://marked.js.org/ || marked

Pandoc also supports Markdown.

Python implementations

CommonMark-py — Python parser for the CommonMark Markdown specification.

https://github.com/rtfd/CommonMark-py || python-commonmark

M2R — Markdown to reStructuredText converter.

https://github.com/miyakogi/m2r || m2r

Mistune — The fastest markdown parser in pure Python with renderer feature.

https://github.com/lepture/mistune || python-mistune

Python-Markdown — Extensible Python implementation of John Gruber's Markdown.

https://github.com/Python-Markdown/markdown || python-markdown

Ruby implementations

kramdown — Fast, pure Ruby Markdown superset converter, using a strict syntax definition.

https://kramdown.gettalong.org/ || ruby-kramdown

Maruku — Pure Ruby Markdown-superset interpreter.

https://github.com/bhollis/maruku || ruby-maruku

mdless — Pure Ruby terminal-based markdown viewer/interpeter.

https://github.com/ttscoff/mdless || ruby-mdless^AUR

Markdown editors

Abricotine — Markdown editor built for desktop. Based on the Electron platform.

https://abricotine.brrd.fr/ || abricotine^AUR

Apostrophe — Distraction free Markdown editor made with GTK.

https://gitlab.gnome.org/World/apostrophe || apostrophe^AUR

CuteMarkEd — Qt-based Markdown editor with live HTML preview, math expressions, code and markdown syntax highlighting. Discontinued since 2016.

https://cloose.github.io/CuteMarkEd/ || cutemarked^AUR

Formiko — reStructuredText and Markdown editor and live previewer written in Python with GTK.

https://github.com/ondratu/formiko || formiko^AUR

ghostwriter — Distraction-free Markdown editor.

https://wereturtle.github.io/ghostwriter/ || ghostwriter

Marker — Simple yet robust Markdown editor.

https://fabiocolacio.github.io/Marker/ || marker

Mark My Words — Minimal markdown editor.

https://github.com/voldyman/MarkMyWords || markmywords^AUR

Mark Text — Next generation markdown editor. Based on the Electron platform.

https://marktext.app/ || marktext^AUR

Remarkable — Fully featured Markdown editor.

https://remarkableapp.github.io/ || remarkable^AUR

ReText — Simple text editor for Markdown and reStructuredText.

https://github.com/retext-project/retext || retext

ThiefMD — Markdown and Fountain editor inspired by Ulysses.

https://thiefmd.com/ || thiefmd^AUR

Typora — Proprietary, minimalist Markdown editor.

https://typora.io/ || typora^AUR

Zettlr — A cross-platform markdown editor, inspired by the Zettelkasten system for note-taking and personal knowledge management.

https://www.zettlr.com/ || zettlr

Typesetting systems

groff — GNU implementation of troff, a heirloom Unix document processing system and the default formatter for man pages.

https://www.gnu.org/software/groff/groff.html || groff

Lout — A lightware document formatting system. Reads a high-level description of a document similar in style to LaTeX and produces a PostScript.

https://savannah.nongnu.org/projects/lout || lout

SILE — Modern typesetting system inspired by TeX.

https://sile-typesetter.org/ || sile

TeX — A high-quality typesetting system popular in academia.

https://tug.org/ || texlive-core

Texinfo — Typesetting syntax for software manuals used by the GNU Project.

https://www.gnu.org/software/texinfo/ || texinfo

TeX editors

With TeX, LaTeX and friends, creation of any scientific document, article, journal, etc. is made commonplace.

AUCTeX — Together with RefTex, AUCTeX provices an extensible environment for writing and formatting TeX files in Emacs.

https://www.gnu.org/software/auctex/ || auctex^AUR

gedit LaTeX Plugin — Add code-completion to gedit and allows for compiling LaTeX documents and managing BibTeX bibliographies.

https://wiki.gnome.org/Apps/Gedit/LaTeXPlugin || gedit-latex^AUR

GNOME LaTeX — LaTeX editor for the GNOME Desktop including support for code completion, compiling and project management.

https://wiki.gnome.org/Apps/GNOME-LaTeX || gnome-latex

Gummi — Lightweight TeX/LaTeX GTK-based editor. It features a continuous preview mode, integrated BibTeX support, extendable snippet interface and multi-document support.

https://github.com/alexandervdm/gummi/ || gummi

Kile — User-friendly TeX/LaTeX editor for the KDE desktop with many features.

https://kile.sourceforge.io/ || kile

Ktikz — Small application helping you to create PGF/TikZ diagrams for your publications.

http://www.hackenberger.at/blog/ktikz-editor-for-the-tikz-language/ || KDE: ktikz, Qt: qtikz

LyX — Document processor that encourages an approach to writing based on the structure of your documents (WYSIWYM) and not simply their appearance (WYSIWYG).

https://www.lyx.org/ || lyx^AUR

Setzer — LaTeX editor written in Python with GTK.

https://www.cvfosammmm.org/setzer/ || setzer^AUR

TeXmacs — WYSIWYW (what you see is what you want) editing platform with special features for scientists.

https://www.texmacs.org/ || texmacs^AUR

Texmaker — Cross-platform, light and easy-to-use LaTeX IDE. It integrates many tools needed to develop documents with LaTeX, in just one application

https://www.xm1math.net/texmaker/ || texmaker

TeXstudio — Fork of TeXMaker including support for code completion of bibtex items, grammar check and automatic detection of the need for multiple LaTeX runs.

http://texstudio.sourceforge.net/ || texstudio

TeXworks — Simple TeX front-end program modeled after TeXShop.

https://tug.org/texworks/ || texworks

TikZiT — Graphical tool for rapidly creating graphs and diagrams using PGF/TikZ.

https://tikzit.github.io/ || tikzit^AUR

Vim-LaTeX-suite — Customizable LaTeX environment for Vim.

http://vim-latex.sourceforge.net/ || vim-latexsuite

TeX formula editors

EqualX — LaTeX equation editor with real time preview.

http://equalx.sourceforge.net/ || equalx^AUR

KLatexFormula — GUI for generating images from LaTeX equations.

https://klatexformula.sourceforge.io/ || klatexformula^AUR

LibreOffice TexMaths extension — LaTeX equation editor for LibreOffice.

http://roland65.free.fr/texmaths/ || libreoffice-extension-texmaths

XML editors

QXmlEdit — Simple Qt XML editor and XSD viewer.

https://qxmledit.org/ || qxmledit

XML Copy Editor — Fast, validating XML editor.

https://xml-copy-editor.sourceforge.io/ || xmlcopyeditor^AUR

XML Tree Editor — Displays XML files as tree views and allows basic operations: adding, editing and deleting text nodes and their attributes.

https://sourceforge.net/projects/xmltreeeditor/ || xmltreeedit-bin^AUR

Document converters

See also #Markup languages and PDF, PS and DjVu.

Antiword — MS Word to text converter.

http://www.winfield.demon.nl/ || antiword

catdoc — Converter for Microsoft Word, Excel, PowerPoint and RTF files to text.

https://wagner.pp.ru/~vitus/software/catdoc/ || catdoc

docx2txt — MS Word Docx to text converter.

http://docx2txt.sourceforge.net/ || docx2txt

HTMLDOC — Reads HTML and Markdown source files or web pages and generates corresponding EPUB, HTML, PostScript, or PDF files with an optional table of contents.

https://www.msweet.org/htmldoc/ || htmldoc

mutool — All purpose tool based on MuPDF for dealing with document files in various manners.

https://mupdf.com/ || mupdf-tools

Pandoc — Swiss-army knife for converting markup and document formats.

https://pandoc.org/ || pandoc

unoconv — Libreoffice-based document converter.

http://dag.wiee.rs/home-made/unoconv/ || unoconv

UnRTF — Command-line program which converts RTF documents to other formats.

https://www.gnu.org/software/unrtf/unrtf.html || unrtf

Bibliographic reference managers

Bibus — A bibliographic database that can directly insert references in OpenOffice.org/LibreOffice and generate the bibliographic index.

https://sourceforge.net/projects/bibus-biblio/ || bibus^AUR

DocEar — Docear is an academic literature suite for searching, organizing and creating academic literature, built upon the mind mapping software Freeplane and the reference manager JabRef.

https://www.docear.org/ || docear^AUR

JabRef — Java GUI frontend for managing BibTeX and other bibliographies.

https://www.jabref.org/ || jabref^AUR

KBibTeX — BibTeX editor by KDE to edit bibliographies used with LaTeX.

https://apps.kde.org/kbibtex/ || kbibtex

Mendeley Desktop — Proprietary reference manager and academic social network.

https://www.mendeley.com/ || mendeleydesktop^AUR

Papis — A command-line based document and bibliography manager.

https://github.com/papis/papis || papis^AUR

Pybliographer — Tool for managing bibliographic databases.

https://pybliographer.org/ || pybliographer^AUR

Referencer — GNOME application to organize documents or references, and ultimately generate a BibTeX bibliography file.

https://launchpad.net/referencer/ || referencer^AUR

Zotero — An easy-to-use tool to help you collect, organize, cite, and share your research sources. Can import and export BibTeX and has browser extensions.

https://www.zotero.org/ || zotero-bin^AUR

Readers and viewers

NFO Viewer — Simple viewer for NFO files.

https://otsaloma.io/nfoview/ || nfoview

PDF and DjVu

See PDF, PS and DjVu.

E-book

Bookworm — Simple, focused e-book reader for Elementary OS with EPUB, PDF, Mobipocket and Comicbook support.

https://babluboy.github.io/bookworm/ || bookworm

Calibre — E-book library management application that can also edit EPUB files, convert between different formats and sync with a variety of e-book readers. Supported formats include CHM, Comicbook, DjVu, DOCX, EPUB, FictionBook, HTML, HTMLZ, Kindle, LIT, LRF, Mobipocket, ODT, PDF, PRC, PDB, PML, RB, RTF, SNB, TCR, TXT and TXTZ.

https://calibre-ebook.com/ || calibre

Cool Reader — E-book viewer with many supported formats such as EPUB (non-DRM), FictionBook, TXT, RTF, HTML, CHM and TCR.

https://sourceforge.net/projects/crengine/ || coolreader

FBReader — E-book viewer with many supported formats such as EPUB, FictionBook, HTML, plucker, PalmDoc, zTxt, TCR, CHM, RTF, OEB, Mobipocket (non-DRM) and TXT.

https://fbreader.org/ || fbreader

Foliate — Simple and modern GTK eBook reader. Supports EPUB, Mobipocket, Kindle, FictionBook, and Comicbook formats.

https://johnfactotum.github.io/foliate/ || foliate

GNOME Books — E-book manager application for GNOME with EPUB, Mobipocket, FictionBook, DjVu and Comicbook support.

https://wiki.gnome.org/Apps/Books || gnome-books

Lector — Qt based e-book reader with PDF, EPUB, Kindle, Mobipocket and Comicbook support.

https://github.com/BasioMeusPuga/Lector || lector^AUR

Sigil — WYSIWYG EPUB e-book editor.

https://sigil-ebook.com/ || sigil

Some PDF viewers like apvlv, Atril, MuPDF, Okular and Xreader also support the EPUB format.

Comic book

Buoh — Online strips comics reader for GNOME.

http://buoh.steve-o.org/ || buoh

HakuNeko — Downloader for manga and anime from various websites. Based on the Electron platform.

https://github.com/manga-download/hakuneko || hakuneko-desktop^AUR

Kindle Comic Converter — Allows you to transform your PNG, JPG, GIF, CBZ, CBR and CB7 files into EPUB or MOBI format e-books.

https://github.com/ciromattia/kcc/ || kcc^AUR

Komikku — Online/offline manga reader for GNOME.

https://gitlab.com/valos/Komikku || komikku^AUR

Manga Reader — Manga reader for local files. Supports zip, rar, tar, 7z, cbz, cbr, cbt, cb7 files and also folders.

https://gitlab.com/g-fb/mangareader || mangareader^AUR

MComix — GTK3 image viewer specifically designed to handle comic book archives (fork of Comix). Also includes library manager.

https://github.com/multiSnow/mcomix3 || mcomix^AUR

Peruse — Comic book reader by KDE.

https://peruse.kde.org/ || peruse^AUR

QComicBook — Viewer for comic book archives that aims at convenience and simplicity.

https://github.com/stolowski/QComicBook || qcomicbook^AUR

YACReader — Comic book viewer written in C++ and Qt5. Comes with YACReaderLibrary for managing comics.

https://yacreader.com/ || yacreader^AUR

Some PDF and E-book viewers like Atril, Bookworm, Calibre, Evince, Foliate, Lector, MuPDF, Okular, Xreader and Zathura also support the Comicbook format.

CHM

Archmage — Extensible reader and decompiler for files in the CHM format.

https://github.com/dottedmag/archmage || archmage^AUR

Kchmviewer — Qt-based CHM viewer that uses chmlib and borrows some ideas from xchm. It does not depend on KDE, but it can be compiled to integrate with it.

http://www.ulduzsoft.com/linux/kchmviewer/ || kchmviewer

xCHM — Lightweight CHM viewer, based on chmlib.

https://github.com/rzvncj/xCHM || xchm

Some PDF and E-book viewers like Cool Reader, FBReader and Okular also support the CHM format.

Document managers

Paperwork — Personal document manager. It manages scanned documents and PDFs.

https://openpaper.work/ || paperwork

Shelf — Document and EBook collection manager that supports PDF and EPUB files.

https://mauikit.org/ || maui-shelf

Scanning software

See SANE#Install a frontend.

ScanTailor Advanced — Interactive post-processing tool for scanned pages. Fork of Scan Tailor with additional features and fixes.

https://github.com/4lex4/scantailor-advanced || scantailor-advanced

OCR software

Console

CuneiForm — Command line OCR system originally developed and open sourced by Cognitive technologies. Supported languages: eng, ger, fra, rus, swe, spa, ita, ruseng, ukr, srp, hrv, pol, dan, por, dut, cze, rum, hun, bul, slo, lav, lit, est, tur.

https://launchpad.net/cuneiform-linux || cuneiform

GOCR — OCR engine which also supports barcode recognition.

https://www-e.uni-magdeburg.de/jschulen/ocr/ || gocr

Ocrad — OCR program based on a feature extraction method.

https://www.gnu.org/software/ocrad/ || ocrad

OCRmyPDF — Adds an OCR text layer to scanned PDF files, allowing them to be searched.

https://github.com/jbarlow83/OCRmyPDF || ocrmypdf^AUR

OCRopus — OCR platform, modules exist for document layout analysis, OCR engines (it can use Tesseract or its own engine), natural language modeling, etc.

https://github.com/tmbdev/ocropy || ocropy^AUR

Tesseract — Accurate open source OCR engine. Package splitted, you need install some datafiles for each language (tesseract-data-eng for example).

https://github.com/tesseract-ocr || tesseract

Graphical

gImageReader — Graphical GTK/Qt frontend to Tesseract.

https://github.com/manisandro/gImageReader || GTK: gimagereader-gtk, Qt: gimagereader-qt

gscan2pdf — Scans, runs an OCR engine, minor post-processing, creates a document.

http://gscan2pdf.sourceforge.net/ || gscan2pdf

Linux-Intelligent-Ocr-Solution — Easy-OCR solution and Tesseract trainer for converting print into text using either scanner or a camera.

https://sourceforge.net/projects/lios/ || lios-git^AUR

OCRFeeder — Python GUI for Gnome which performs document analysis and rendition, and can use either CuneiForm, GOCR, Ocrad or Tesseract as OCR engines. It can import from PDF or image files, and export to HTML or OpenDocument.

https://wiki.gnome.org/Apps/OCRFeeder || ocrfeeder

Paperwork — Personal document manager. It manages scanned documents and PDFs.

https://openpaper.work/ || paperwork

Scans to PDF — Create small, searchable PDFs from scanned documents.

https://github.com/Unrud/djpdf || djpdf^AUR

YAGF — Graphical interface for the CuneiForm text recognition program on the Linux platform.

https://sourceforge.net/projects/yagf-ocr/ || yagf^AUR

Notes

Note-taking software

Console

Geeknote — Command line client for Evernote.

https://github.com/VitaliyRodnenko/geeknote || geeknote-git^AUR

hierarchical notebook — Program to organize many kinds of data (addresses, to-do lists, ideas, book reviews, etc.) in one place using the XML format.

http://hnb.sourceforge.net/ || hnb^AUR

Org mode — Emacs mode for notes, project planning and authoring.

https://orgmode.org/ || emacs-org-mode^AUR

tnote — Small note taking program for the terminal.

https://sourceforge.net/projects/tnote/ || tnote^AUR

Vimwiki — Personal wiki for Vim – interlinked, plain text files written in a markup language.

https://vimwiki.github.io/ || vim-vimwiki^AUR

dnote — A simple command line notebook for programmers

https://github.com/dnote/dnote || not packaged? search in AUR

eureka — CLI tool to input and store your ideas without leaving the terminal

https://github.com/simeg/eureka || not packaged? search in AUR

Graphical

BasKet — Application for organizing, sharing, and taking notes. It can manage various types of information such as to-do lists, links, pictures, and other types, similar to a scrapbook.

https://basket-notepads.github.io/ || basket^AUR

Boostnote — Note-taking application for programmers that focuses on markdown, snippets, and customizability. Based on the Electron platform.

https://boostnote.io/ || boost-note-bin^AUR

Buho — Task and note keeper to save links, write quick notes and organize pages as books.

https://mauikit.org/apps/buho/ || buho

Cherrytree — Hierarchical note taking application, featuring rich text and syntax highlighting, storing data in a single xml or sqlite file.

https://www.giuspen.com/cherrytree/ || cherrytree

Deepin Voice Notes — Lightweight memo tool to make text notes and voice recordings.

https://github.com/linuxdeepin/deepin-voice-note || deepin-voice-note

Encryptic — JavaScript note taking application with Markdown editor and encryption support. Based on the Electron platform.

https://www.encryptic.org/ || encryptic^AUR

FeatherNotes — Lightweight Qt hierarchical notes-manager.

https://github.com/tsujan/feathernotes || feathernotes

FromScratch — Simple but smart note-taking application that you can use as a quick note taking or todo app. Based on the Electron platform.

https://fromscratch.rocks/ || fromscratch-bin^AUR

GNOME Notes — Note editor for GNOME designed to remain simple to use.

https://wiki.gnome.org/Apps/Notes || gnome-notes

Gnote — Port of Tomboy to C++. It is the same note taking application, including most of the add-ins.

https://wiki.gnome.org/Apps/Gnote || gnote

Joplin — Note taking and to-do application, which can handle a large number of notes organized into notebooks. Based on the Electron platform.

https://joplinapp.org/ || joplin^AUR

KeepNote — Cross-platform GTK note-taking application with rich text formatting.

http://keepnote.org || keepnote^AUR

KJots — Note taking application for KDE.

https://userbase.kde.org/KJots || kjots

Mikidown — Note taking application featuring markdown syntax.

https://shadowkyogre.github.io/mikidown/ || mikidown^AUR

MyNotex — Note-taking, document file and activity manager.

https://sites.google.com/site/mynotex/ || mynotex^AUR

Nextcloud Notes — Simple notes app for Nextcloud.

https://github.com/nextcloud/notes || nextcloud-app-notes

NixNote — Helps you take notes and stay organized. Create text notes, attach files or images, and even synchronize with Evernote. Formerly called Nevernote.

http://nixnote.org/ || nixnote2^AUR

Norka — Note-taking software with Markdown support designed for Pantheon.

https://tenderowl.com/work/norka/ || norka^AUR

Notejot — Stupidly simple sticky notes applet for elementaryOS.

https://github.com/lainsce/notejot || notejot^AUR

Notes — Note-taking application, write down your thoughts.

https://www.get-notes.com/ || notes^AUR

Notes-Up — Markdown notes editor and manager for elementaryOS.

https://github.com/Philip-Scott/Notes-up || notes-up

Notorious — Keyboard centric note-taking application with Markdown syntax highlighting support.

https://notorious.gabmus.org/ || notorious-git^AUR

nvPY — Simplenote syncing note-taking application, inspired by Notational Velocity and ResophNotes, but uglier and cross-platformerer.

https://github.com/cpbotha/nvpy || nvpy^AUR

Obsidian — Personal knowledge base that uses markdown text files to organize notes in a format that mirrors the human brain.

https://obsidian.md/ || obsidian

OutWiker — Store notes in a tree.

https://jenyay.net/Outwiker/English || outwiker^AUR

QOwnNotes — Notepad and todo list manager with markdown support and optional ownCloud integration built on Qt5.

https://www.qownnotes.org/ || qownnotes^AUR

Simplenote — The simplest way to keep notes. Based on the Electron platform.

https://simplenote.com/ || simplenote-electron-bin^AUR

Standard Notes — Simple and private notes application which focuses on simplicity, and encrypts data locally before it ever touches a cloud. Based on the Electron platform.

https://standardnotes.com/ || standardnotes-desktop^AUR

TagSpaces — Offline personal data manager for managing of your local files. Based on the Electron platform.

https://www.tagspaces.org/ || tagspaces^AUR

TiddlyWiki — Unique non-linear notebook for capturing, organizing and sharing complex information.

https://tiddlywiki.com/ || tiddlywiki^AUR

Tomboy — Desktop note-taking application for Linux and Unix with a wiki-like linking system to connect notes together.

https://wiki.gnome.org/Apps/Tomboy || tomboy^AUR

Trilium — Build your personal knowledge base with Trilium Notes.

https://github.com/zadam/trilium || trilium-bin^AUR, trilium-server-bin^AUR

TuxCards — Hierarchical notebook to enter and manage ever every kind of notes and ideas in a structured manner.

https://tuxcards.de/ || tuxcards

VNote — Vim-inspired note-taking application that knows programmers and Markdown better.

https://vnotex.github.io/vnote || vnote^AUR

WikidPad — Wiki-like notebook for storing your thoughts, ideas, todo lists, contacts, or anything else you can think of to write down.

http://wikidpad.sourceforge.net/ || wikidpad^AUR

WizNote — Cloud based note-taking client.

https://github.com/WizTeam/WizQTClient || wiznote

Zim — WYSIWYG text editor that aims at bringing the concept of a wiki to the desktop.

https://zim-wiki.org/ || zim

zNotes — Lightweight application for notes management with simple interface.

https://sourceforge.net/projects/znotes/ || znotes^AUR

μPad — Note-taking app that helps you organise + take notes without restrictions. Based on the Electron platform.

https://getmicropad.com || micropad^AUR

Stylus note-taking

Cournal — Collaborative note taking and journal application using a stylus. It allows multiple users to annotate PDF files in real-time.

https://github.com/flyser/cournal || cournal^AUR

Write — A proprietary word processor for handwriting.

http://www.styluslabs.com/ || write_stylus^AUR

Xournal — Application for notetaking, sketching and keeping a journal using a stylus. Capable of annotating existing PDF files as well.

http://xournal.sourceforge.net/ || xournal^AUR

Xournal++ — Notetaking software designed around a tablet. C++ rewrite of Xournal with PDF annotation support.

https://github.com/xournalpp/xournalpp || xournalpp

Rnote — A simple note taking application written in Rust and GTK4.

https://github.com/flxzt/rnote || rnote

Diary

Almanah — Small GTK application to allow you to keep a diary of your life.

https://wiki.gnome.org/Apps/Almanah_Diary || almanah

Hazama — Simple and highly customizable application for keeping diary. There is no calendar but a big list that contains preview of diaries.

https://hazama.cc/ || hazama^AUR

Lifeograph — Off-line and private journal and note taking application. It offers a rich feature set presented in a clean and simple user interface.

http://lifeograph.sourceforge.net/ || lifeograph

RedNotebook — Modern journal, which lets you format, tag and search your entries.

https://rednotebook.sourceforge.io/ || rednotebook

Simple Diary — Simple and lightweight diary app with Markdown support.

https://github.com/johan-bjareholt/simple-diary-gtk || simple-diary-gtk^AUR

Mind-mapping

FreeMind — Mind-mapping software written in Java.

http://freemind.sourceforge.net || freemind^AUR

Freeplane — Fork of FreeMind, supports thinking, sharing information and getting things done at work. The software can be used for mind mapping and analyzing the information contained in mind maps.

https://www.freeplane.org/ || freeplane

Minder — Mind-mapping application designed for Pantheon.

https://github.com/phase1geo/Minder || minder

MindMaster — Proprietary mindmap and brainstorm software with modern UI and beautiful template. It also provides online mindmap service and cross-platform sharing.

https://www.edrawsoft.com/mindmaster/ || mindmaster_en^AUR

Semantik — Mind-mapping application for KDE.

https://waf.io/semantik.html || semantik^AUR

TreeSheets — A "hierarchical spreadsheet" that is a great replacement for spreadsheets, mind mappers, outliners, PIMs, text editors and small databases.

https://strlen.com/treesheets/ || treesheets-git^AUR

View Your Mind — Tool to generate and manipulate maps which show your thoughts. Such maps can help you to improve your creativity and effectivity. You can use them for time management, to organize tasks, to get an overview over complex contexts, to sort your ideas etc.

https://sourceforge.net/projects/vym/ || vym

Visual Understanding Environment — Flexible tools for managing and integrating digital resources in support of teaching, learning and research.

https://vue.tufts.edu/ || vue^AUR

XMind — Brainstorming and mind mapping application. It provides a rich set of different visualization styles, and allows sharing of created mind maps via their website.

https://www.xmind.net/ || xmind^AUR

Sticky notes

GloboNote — Easy to use desktop note taking application. You can use it to create sticky notes, to-do lists, personal journals, reminders and other notes all in one application.

https://globonote.info/ || globonote^AUR

KNotes — Program that lets you write the computer equivalent of sticky notes. Part of kde-pim.

https://kontact.kde.org/components/knotes.html || knotes

MyNotes — Sticky note application. An icon appears in the system tray and from it you can create and manage your sticky notes.

https://github.com/j4321/MyNotes || mynotes^AUR

Notes — Provides you a quick way to paste text, to write down a list of things, to leave a note to your friend, or whatever you had do with Post-It's.

https://goodies.xfce.org/projects/panel-plugins/xfce4-notes-plugin || xfce4-notes-plugin

PrimeNote — Most polished, cross-platform sticky note application (PyQt5). Provides support for Cloud, Vim, CSS styling and more !

https://gitlab.com/william.belanger/primenote || primenote-git^AUR

xNots — Desktop post-it/sticky note system for the Unix geek.

https://github.com/thePalindrome/xnots || xnots-git^AUR

Xpad — Sticky note application for jotting down things to remember.

https://launchpad.net/xpad || xpad

Special writing environments

Distraction-free writing

FocusWriter — Simple, distraction-free writing environment. It utilizes a hide-away interface that you access by moving your mouse to the edges of the screen, allowing the program to have a familiar look and feel to it while still getting out of the way so that you can immerse yourself in your work.

https://gottcode.org/focuswriter/ || focuswriter

PyRoom — Fullscreen editor without buttons, widgets, formatting options, menus and with only the minimum of required dialog windows, it does not have any distractions and lets you focus on writing and only writing.

https://pyroom.org/ || pyroom^AUR

Quilter — Focus on your writing and write beautiful solid stories with the Focus Mode in tow in this Markdown editor.

https://github.com/lainsce/quilter || quilter^AUR

TextRoom — Fullscreen text editor for writers.

https://github.com/dbuksbaum/TextRoom || textroom^AUR

Story writing

Manuskript — Provides a rich environment to help writers create their first draft and then further refine and edit their masterpiece.

http://www.theologeek.ch/manuskript/ || manuskript

NovProg — Tool to graph your progress in writing a NaNoWriMo style novel.

https://gottcode.org/novprog/ || novprog^AUR

oStorybook — Tool for writers, essayists, authors from the draft to the final work.

https://ostorybook.tuxfamily.org/?lng=en || ostorybook^AUR

Screenwriting

KIT Scenarist — Simple and powerful application for creating screenplays.

https://kitscenarist.ru/en/ || scenarist

Magic Fountain — Fountain syntax editor and viewer for writing screenplays.

https://aztorius.github.io/magicfountain/ || magicfountain^AUR

Trelby — Simple, fast and elegantly laid out to make screenwriting simple.

https://www.trelby.org/ || trelby-git^AUR

Fade In — Fade In Professional Screenwriting Software is the most advanced software used by professionals writing for motion pictures, television, video games, the stage, radio, and more.

https://www.fadeinpro.com/ || fadein^AUR

Language

Dictionary and thesaurus

Console

dictd — Client/server software for the DICT protocol.

https://sourceforge.net/projects/dict/ || dictd

sdcv — Command line dictionary. It provides access to dictionaries in StarDict's format.

https://dushistov.github.io/sdcv/ || sdcv

thesauromatic — Static, offline, command-line thesaurus written in Rust.

https://github.com/cjrh/thesauromatic || thesauromatic-git^AUR

Graphical

Artha — English thesaurus that works completely off-line and is based on WordNet.

http://artha.sourceforge.net/ || artha^AUR

Gjiten Kai — Rewrite of Gjiten, a GTK Japanese dictionary.

https://github.com/odrevet/gjiten-kai || gjitenkai-git^AUR

GNOME Dictionary — GNOME application to check word definitions and spellings in an online dictionary.

https://wiki.gnome.org/Apps/Dictionary || gnome-dictionary

GoldenDict — Feature-rich dictionary lookup program.

http://www.goldendict.org/ || goldendict-git^AUR

Kiten — Japanese reference and study tool. Part of kde-education.

https://apps.kde.org/kiten/ || kiten

MATE Dictionary — MATE application to look up words in dictionary sources.

https://github.com/mate-desktop/mate-utils || mate-utils

OpenDict — Computer dictionary, which supports popular computer dictionary formats including Slowo and Mova. It also acts as a client for DICT servers.

http://opendict.sourceforge.net/ || opendict^AUR

Palaura — Handy dictionary to find any word's definition.

https://github.com/lainsce/palaura || palaura^AUR

PowerWord — Proprietary Chinese-English dictionary tool.

https://www.iciba.com || powerword-bin^AUR

QStarDict — Dictionary program written using Qt. The user interface is similar to StarDict.

http://qstardict.ylsoftware.com/ || qstardict

Quick Lookup — Simple GTK dictionary application powered by Wiktionary.

https://github.com/johnfactotum/quick-lookup || quick-lookup^AUR

StarDict — International dictionary software.

http://stardict-4.sourceforge.net/ || stardict

Xfce4 Dictionary — Search different kinds of dictionary services for words or phrases.

https://goodies.xfce.org/projects/applications/xfce4-dict || xfce4-dict

Spell checkers

See Language checking.

Translation and localization

Apertium — Free and open source rule-based machine translation platform with available language data. It supports the following formats: HTML, Microsoft Office 2007 XML, OpenDocument, TMX, MediaWiki and others.

https://www.apertium.org/ || apertium^AUR

Crow Translate — Simple and lightweight translator that allows to translate and speak text using Google, Yandex and Bing.

https://crow-translate.github.io/ || crow-translate^AUR

Dialect — A translation app for GNOME based on Google Translate.

https://github.com/dialect-app/dialect || dialect^AUR

Gtranslator — Enhanced gettext po file editor for the GNOME. It handles all forms of gettext po files and includes very useful features.

https://wiki.gnome.org/Apps/Gtranslator || gtranslator

Lokalize — Standard KDE tool for software translation. It includes basic editing of PO files, support for glossary, translation memory, project managing, etc. It belongs to kdesdk

https://apps.kde.org/lokalize/ || lokalize

Moses — Statistical machine translation tool (language data not included).

http://statmt.org/moses/ || mosesdecoder^AUR

OmegaT — General translator's tool which contains a lot of translation memory features and can give suggestions from Google Translate. It supports the following formats: HTML, Microsoft Office 2007 XML, OpenDocument, XLIFF/Okapi, MediaWiki, plain text, TMX and others.

https://omegat.org/ || omegat^AUR

Poedit — Simple translation editor for gettext (PO, POT) and XLIFF.

https://poedit.net || poedit

Pology — Set of Python tools for dealing with gettext/po-files.

https://techbase.kde.org/Localization/Tools/Pology || pology^AUR

Qt Linguist — Translating Qt C++ and Qt Quick applications into local languages.

https://doc.qt.io/qt-5/qtlinguist-index.html || qt5-tools

Translate Shell — Command-line interface and interactive shell for Google Translate.

https://www.soimort.org/translate-shell/ || translate-shell

Translate Toolkit — Localization and translation toolkit, which provides a set of tools for working with localization file formats and files that might need localization.

https://toolkit.translatehouse.org/ || translate-toolkit