Audacity

Sound recording and post-processing. (GNU GPLv2+)

Ardour

Digital Audio Workstation (DAW). (GNU GPLv2)

Libre.fm

Stream, download, remix, and share music for free. (GNU AGPLv3)

LMMS

Complete digital audio workstation. (GNU GPLv2+)

mStream

Suite of software for syncing and streaming music across multiple devices. (GNU GPLv3)

Nuclear Music Player

Streaming music player that finds music from free sources automatically. (GNU AGPLv3)

asciinema

Terminal session recorder. (GNU GPLv3)

Clipboard

Cut, copy, and paste anything, anywhere, all from the command line. (GNU GPLv3)

Cygwin

Unix-like environment for Windows, providing access to a number of tools commonly found on Linux systems. (GNU GPLv3)

Logdissect

CLI utility and Python API for analyzing log files and other data. (MIT)

PuTTY

Remote terminal emulator that connects over SSH, Telnet, SCP, and rlogin protocols as well as raw socket connections. (MIT)

ranger

Minimal, lightweight, and aesthetically pleasing file explorer for GNU/Linux. It runs in the terminal window, so it fits in well with window managers such as i3. vi key bindings allow for quick operations to be performed, including rename and delete. (GNU GPLv3)

GNU stow

GNU Stow is a symlink farm manager which takes distinct packages of software and/or data located in separate directories on the filesystem, and makes them appear to be installed in the same place. (GNU GPLv3)

SimpleLocalize

Open source tool for managing i18n keys in software projects.

Localizely

Open source tool that helps you sync localization files between your source code and the Localizely platform. (MIT)

Kit CLI

Open source MLOps tool that allows you to create, manage, run, and deploy ModelKits using Kitfiles. From packaging new models to deploying existing ones, Kit CLI lets you streamline workflows effortlessly. (Apache License 2.0)

Conversations

XMPP/Jabber client for Android. (GNU GPLv3)

Gajim

XMPP/Jabber client for desktop. (GNU GPLv3)

Jitsi Meet

Secure video conferencing and desktop sharing using WebRTC. (Apache License 2.0)

Mail-in-a-Box

Easy-to-deploy mail server package for cloud computers. (CC0)

Matrix

Open standard for decentralised, persistent, and interoperable communications. (Apache License 2.0)

Mattermost

Open source, private cloud alternative to Slack. (Licensing)

ProtonMail

Secure web-based email service. (MIT)

Ring

Telephone, teleconferencing, and media sharing through a distributed service. (GNU GPLv3)

Signal

Private messaging and calling for desktop, Android, and iOS. (GNU GPLv3)

Tox

Encrypted and distributed messaging platform with voice, video, and screen sharing. (GNU GPLv3)

Tutanota

Encrypted email at no cost with support for business accounts. (GNU GPLv3)

7-Zip

File archiver for creating and opening compressed files. (GNU LGPLv2.1+)

Filestash

A Dropbox-like web client where users can bring their own backend (FTP, SFTP, Webdav, S3, Minio, ...). (GNU AGPLv3)

FileZilla

Universal FTP solution. (GNU GPLv2+)

Mikochi

A web interface for browsing remote folders, managing files (uploading, deleting, renaming, downloading), and streaming directly to VLC/mpv. (MIT)

WinSCP

SFTP and FTP client for Windows (GNU GPLv3)

qBittorrent

Easy to use BitTorrent client. (GNU GPLv2+)

Sharry

Convinient file sharing web application that allows you to upload files and get a url back that can then be shared. (GNU GPLv3+)

Blender

3D creation suite for modeling, simulation, and animation. (GNU GPLv2+)

ExifCleaner

GUI app to remove exif metadata from images and videos with simple drag and drop. (MIT)

GIMP

Image manipulation software. (GNU GPLv3)

Inkscape

Professional vector graphics editor for all platforms. (GNU GPL)

Krita

Painting program made by artists. (GNU GPLv3)

Pinta

Gtk# clone of Paint.NET. (MIT)

Piskel

Online sprite editor. (Apache License 2.0)

Eclipse

Extensible IDE that supports the latest Java versions as well as other languages. (EPL)

IntelliJ IDEA Community Edition

Java/Android IDE with the goal of maximizing developer productivity. (Apache License 2.0)

LibreOffice

Office suite with word processor, spreadsheet, and presentation programs. (MPLv2)

Open Office

Provides a full featured office productivity suite based on open standards. (Apache License 2.0)

Zathura

Highly customizable and functional document viewer. It provides a minimalistic and space saving interface as well as an easy usage that mainly focuses on keyboard interaction. (zlib License)

Debian

One of the earliest UNIX-like operating systems with a commitment to keeping nonfree software out of its system. (DFSG)

Devuan

Fork of Debian without systemd. (Licenses)

PureOS

FSF endorsed derivative of Debian. (Multiple licenses)

LineageOS

Android distribution for phones and tablets and successor of CyanogenMod. (Multiple licenses)

Arch

Lightweight and flexible Linux distribution that tries to keep it simple. (GNU GPLv2)

Disroot

Hosted versions of many of the services on this list. (Multiple licenses)

OpenMapTiles

Set of open-source tools for self-hosting of OpenStreetMap maps in more than 50 languages. It provides both raster as well as vector tiles, WMS and WMTS services for GIS programs, support for JavaScript viewers and mobile SDK. (BSD)

ZeroNet

Decentralized websites using Bitcoin cryptography and the BitTorrent network. (GNU GPLv2)

Simple Mobile Tools

Android apps with customizable widgets, without annoying ads and unnecessary permissions.

IP2Trace

A traceroute tools that displaying geolocation information using IP2Location database. (MIT)

Electrum

Lightweight Bitcoin client that provides wallet recovery, decentralized servers, and offline storage. (MIT)

GNU Taler

Cash-like system for online payments. (GNU GPL)

DocEar

Literature management using mind mapping technology. (GNU GPLv2+)

JabRef

Manages references and attached PDFs using BibTeX/BibLaTeX. Includes support for LibreOffice. (MIT)

OBS Studio

Screen recorder and video streaming application for all platforms. (GNU GPLv2)

ShareX

Screen capture, file sharing and productivity tool. (GNU GPLv3)

SimpleScreenRecorder

Highly customisable GUI screencasting program. (GNU GPLv3)

Atom

Hackable text and source code editor. (Archived) (MIT)

Pulsar

A Community-led Hyper-Hackable Text Editor. Forked from Atom. (MIT)

Emacs

An extensible, customizable, free/libre text editor — and more. (GNU GPL)

GNU nano

Simple text editor for the command line. (GNU GPL)

vim

Vim is a highly configurable text editor built to make creating and changing any kind of text very efficient. (GNU GPL compatible)

VS Code

A source-code editor made by Microsoft (MIT)

Notepad++

Extensible text and source code editor. (GNU GPLv2+)

Grayscale Mode

An open source macOS app that lets you quickly toggle grayscale filter right from your menu bar or using a keyboard shortcut (⌥⌘G). (MIT)

Markdownify

A minimal Markdown editor. (MIT)

Sandman

Lets you know when to turn off the computer and sleep based on calculated sleep cycles. (MIT)

Search Deflector

A small program that redirects searches made from the Windows Start Menu or Cortana to whatever browser and search engine you prefer. (MIT)

Wireshark

Packet analyzer for network troubleshooting and analysis. (GNU GPLv2)

Espanso

A cross-playform text expander (GNU GPLv3)

Freeter

Freeter allows to gather everything you need for work in one place, organized by projects and workflows, and have a quick access to them. For Win, Linux, Mac OS. (GNU GPLv3)

NewPipe

Lightweight YouTube frontend for Android. (GNU GPLv3)

Kodi

Home Theater software and entertainment hub. (GNU GPLv2)

VLC

Multimedia player that supports a variety of audio and video formats. (GNU GPLv3)

youtube-dl

Feature-rich command line program to download videos from YouTube and other video sites. (Unlicense)

MPV

Customizable multimedia player with scripting support. (GNU GPLv2)

QEMU

QEMU is a generic and open source machine emulator and virtualizer. (GNU GPLv2)

VirtualBox

Feature rich virtualization tools with support for many operating systems. (GNU GPLv2)

Cloverleaf

An open source app to replace your password manager without storing your passwords anywhere. (MIT)

Dnote

A simple command line notebook with multi-device sync and web interface. (GNU AGPLv3)

DocuSeal

A platform to fill and sign digital documents. (GNU AGPLv3)

Etherpad

Collaborative document editing in real-time. (Apache License 2.0)

Ghost

Hackable platform for building and running online publications. (MIT)

GitLab

Git repository manager for the entire code lifecycle. (MIT)

GNU social

Microblogging server written in PHP. (GNU GPLv3)

Gogs

Lightweight, cross-platform, self-hosted Git service. (MIT)

Healthchecks

Cron job monitoring service. (BSD 3-clause)

Inventaire

Share books with friends and communities. (GNU AGPLv3)

Lobsters

Link aggregation and discussion with downvote explanations. (BSD 3-clause)

Mastodon

Decentralized social network server. (GNU AGPLv3)

MediaGoblin

Publishing platform for all types of media. (GNU AGPLv3)

MediaWiki

Wiki software that can organize and serve large amounts of frequently accessed data. (GNU GPLv2+)

MetaGer

Private search engine created by a non-profit that uses green electricity for its servers. (GNU AGPLv3)

Neocities

GeoCities for the modern world. (BSD 2-clause)

NotABug.org

Collaboration platform for freely licensed projects. (MIT)

OpenStreetMap

Map of the world created by users and released under an open license. (GNU GPLv2)

PeerTube

Decentralized video streaming service. (GNU AGPLv3)

Phabricator

Code management platform (similar to GitLab) built with PHP. (Apache License 2.0)

Tolgee

Developer & translator friendly web-based localization platform. (Apache License 2.0)

Wallabag

Save and classify articles. Read them later. Freely. (MIT)

Weblate

Translation management system with version control integration. (GNU GPLv3)

WordPress

Blog publishing platform and content management system. (GNU GPLv2+)

Apache HTTP Server

Secure, efficient, and extensible web server. (Apache License 2.0)

lighttpd

Optimized for speed-critical environments while remaining standards-compliant, secure and flexible. (Revised BSD license)

nginx

HTTP and reverse proxy server, a mail proxy server, and a generic TCP/UDP proxy server. (2-clause BSD-like license)

Aleph Objects

Respects Your Freedom (RYF) certified 3D printer built with libre hardware and software.

Libiquity

Designs and develops embedded software and firmware systems.

Purism

Privacy, security, and freedom focused computers and software.

Raptor Computing Systems

Desktops, motherboards, and other parts utilizing the IBM POWER9 processor and OpenBMC firmware.

Technoethical

Laptops, adapters, and mobile devices compatible with free operating systems.

ThinkPenguin

Modern laptops, desktops, and printers that contain no proprietary software.

Vikings

Hosting company powered by Libreboot firmware, libre software, and green energy that also sells hardware.

disaster.radio

Off-grid, solar-powered, long-range mesh network built on free software and affordable, open hardware.

h-node

Database of hardware that works with a fully free operating system.

Linux Preloaded

Hand-picked list of vendors from many regions that sell computers preinstalled with free software.

Respects Your Freedom Hardware Certification

Requirements to qualify for the Free Software Foundation's RYF certification.

Free Software

Wikipedia entry on the topic of free software.

'Libre' Software: Turning Fads into Institutions?

Academic article presenting an economic analysis of libre software and its sustainability.

Software Freedom

Short, simple explanation of why free software is important from Devuan.

BrainBlasted's Privacy and Free Software Blog

Practical look at issues involving free software and privacy.

Bytemark

Transparent UK hosting company that offers a 50% discount for anyone publishing free software.

Free Software Directory

Over 15,000 free software packages.

Free GNU/Linux Distributions

Entirely free distributions.

freepost

Everything related to free culture.

LibrePlanet

Annual conference on free software.

Software Freedom Day

Annual worldwide celebration of free software with the aim of increasing awareness of free software and its virtues.

FOSSology

License compliance toolkit for software projects.

gplenforced.org

Community-oriented GPL enforcement.

April

Promouvoir et défendre le logiciel libre.

Digital Freedom Foundation

Promotes access to knowledge via technology.

Framasoft

Network dedicated to globally promoting free software, innovative projects, and a world of sharing and cooperation.

Free Software Foundation

Nonprofit with a worldwide mission to promote computer user freedom.

Free Software Movement Karnataka

Group in Bengaluru, India that spreads awareness about free software.

Free Software Movement of India

Coalition of free software organizations in India.

FSF India

Indian sister site for the FSF.

FSFE

European sister site for the FSF.

FSFLA

Latin American sister site for the FSF.

GNU

Home of the GNU/Linux operating system.

Open Source Hardware Association

Promotes hardware that respects user freedom.

Outreachy

Helps people from underrepresented backgrounds find internships with FOSS software companies.

Peers

Community that helps support and grow free projects.

Software Freedom Conservancy

Charity that helps promote, improve, develop, and defend free, libre, and open source software projects.

Software Freedom Law Center

Provider of no-cost legal services to free, libre, and open source software creators.

Snowdrift.coop

Crowdmatching for public goods.

TuxFamily

No cost hosting and other services for libre projects.

Maxime Lathuilière

Reorganizing information and resources through libre software to enable a free society.

Agustín Benito: Free Software, Beyond Software (TEDxLaLaguna)

(Español)

Eben Moglen: How I Discovered Free Software

Prof. Nagarjuna G: Free Software for Digital India

Richard Stallman: Free Software, Free Society (TEDxGeneva 2014)

Stephen Fry: Free Software

Wrishiraj Kaushik: I Am Not a Free Software Guy

Hacking for the Commons, by Philippe Borrel

.