Software forks

WordPress (WP, or WordPress.org) is a web content management system. It was originally created as a tool to publish blogs but has evolved to support publishing other web content, including more traditional websites, mailing lists, Internet forums, media galleries, membership sites, learning management systems, and online stores. Available as free and open-source software, WordPress is among the most popular content management systems – it was used by 22.52% of the top one million websites .

LibreOffice () is a free and open-source office productivity software suite developed by The Document Foundation (TDF). It was created in 2010 as a fork of OpenOffice.org, itself a successor to StarOffice. The suite includes applications for word processing (Writer), spreadsheets (Calc), presentations (Impress), vector graphics (Draw), database management (Base), and formula editing (Math). It supports the OpenDocument format and is compatible with other major formats, including those used by Microsoft Office.

Inkscape is a free and open-source software vector graphics editor released under a GNU General Public License (GPL) 2.0 or later. It is used for both artistic and technical illustrations such as cartoons, clip art, logos, typography, diagrams, and flowcharts. It uses vector graphics to allow for sharp printouts and renderings at unlimited resolution and is not bound to a fixed number of pixels like raster graphics.

Joomla (), also styled Joomla! (with an exclamation mark) and sometimes abbreviated as J!, is a free and open-source content management system (CMS) for publishing web content on websites. Web content applications include discussion forums, photo galleries, e-Commerce and user communities, and numerous other web-based applications. Joomla is developed by a community of volunteers supported with the legal, organisational and financial resources of Open Source Matters, Inc.

OpenBSD is a security-focused, free software, Unix-like operating system based on the Berkeley Software Distribution (BSD). Theo de Raadt created OpenBSD in 1995 by forking NetBSD 1.0. The OpenBSD project emphasizes portability, standardization, correctness, proactive security, and integrated cryptography.

desktop environment forked from GNOME 2

GTK+ 3-based desktop environment initially developed for Linux Mint

WebKit is a browser engine primarily used in Apple's Safari web browser, as well as all web browsers on iOS and iPadOS. WebKit is also used by the PlayStation consoles starting with the PS3, the Tizen mobile operating systems, the Amazon Kindle e-book reader, Nintendo consoles starting with the 3DS Internet Browser, GNOME Web, and the discontinued BlackBerry Browser.

free software re-implementation of the SMB networking protocol

MariaDB is a community-developed, commercially supported fork of the MySQL relational database management system (RDBMS), intended to remain free and open-source software under the GNU General Public License. Development is led by some of the original developers of MySQL, who forked it due to concerns over its acquisition by Oracle Corporation in 2009.

LineageOS is an open source Android (AOSP)-based operating system for smartphones, tablets, and set-top boxes. It is community-developed and serves as the successor to CyanogenMod, from which it was forked in December 2016. As of 2025, there are about 4.5 million devices running LineageOS.

new program, and line of software development, derived from an existing one

operating system

web browser from GNOME

thumb|Fluxbox 1.3 Xsession running on Debian [[GNU/Linux 7]]

open source integrated library system (ILS)

the X.Org Foundation's display server for the X Window System

free and open-source browser engine of the Chromium project

Firefox derivative recommending only free software

audio player, free and open source software

web browser

NeoOffice is a discontinued office suite for the macOS operating system developed by Planamesa Inc. It was a commercial fork of the free and open source LibreOffice office suite, including a word processor, spreadsheet, presentation program, and graphics program. It added some features not present in the macOS versions of LibreOffice and Apache OpenOffice. The last few versions were based on LibreOffice 4.4, which was released mid-2014.

desktop environment

REDIRECT Mozilla Composer#KompoZer

postmarketOS (abbreviated as pmOS) is an operating system primarily for smartphones, based on the Alpine Linux distribution. Developed since 2016, it was launched in 2017, and continues to be a work in progress.

ColorOS is a user interface created by Oppo based on the Android Open Source Project. Initially, Realme phones used ColorOS until it was replaced by Realme UI in 2020. Realme UI uses some of ColorOS's apps. Starting from the OnePlus 9 series, OnePlus will preinstall ColorOS on all smartphones that are sold in mainland China instead of HydrogenOS (Chinese version of OxygenOS).

FrostWire is a free and open-source BitTorrent client first released in September 2004, as a fork of LimeWire. It was initially very similar to LimeWire in appearance and functionality, but over time developers added more features, including support for the BitTorrent protocol. In version 5, support for the Gnutella network was dropped entirely, and FrostWire became a BitTorrent-only client.

free software version of Android

OpenIndiana is a free and open-source illumos distribution compatible with SPARC and x86-64 based computers. The project began in 2010, forked from OpenSolaris after OpenSolaris was discontinued by Oracle Corporation, and is hence descended from UNIX System V Release 4.

LibreWolf is a free and open-source fork of Firefox, with an emphasis on privacy and security. It is licensed under the MPL 2.0.

Illumos (stylized as "illumos") is a partly free and open-source Unix operating system. It has been developed since 2010 and is based on OpenSolaris, after the discontinuation of that product by Oracle. It comprises a kernel, device drivers, system libraries, and utility software for system administration. Its core has become the base for many different open-sourced Illumos distributions, in a way similar to how the Linux kernel is used in different Linux distributions.

compatibility layer for running Windows software on Linux

Sodipodi is a free and open-source vector graphics editor, superseded since 2003 by Inkscape, an independent Sodipodi fork.

ELinks is a text-based web browser for the operating systems DOS, Linux, and Windows. It is free and open-source software with a GNU General Public License (GPL) 2.0 only.

aMule is a free peer-to-peer file sharing utility that works with the eDonkey network and the Kad network, offering similar features to eMule and adding others such as GeoIP (country flags). On August 18, 2003 it was forked from the xMule source code, which itself is a fork of the lMule project, which was the first attempt to bring the eMule client to Linux. These projects were discontinued and aMule is the resulting project, though aMule has less and less resemblance to the client that sired it.

REDIRECT Debian–Mozilla trademark dispute

Desktop environment

Xonotic () is a free and open-source first-person shooter video game. It was developed as a fork of Nexuiz, following controversy surrounding the game's development. The game runs on a heavily modified version of the Quake engine known as the DarkPlaces engine. Its gameplay is similar to the Quake 3 Arena series of games, but with various unique elements.

software

XEmacs is a graphical- and console-based text editor which runs on almost any Unix-like operating system as well as Microsoft Windows. XEmacs is a fork, based on a version of GNU Emacs from the late 1980s. Any user can download, use, and modify XEmacs as free software available under the GNU General Public License version 2 or any later version.

LibreSSL is an open-source implementation of the Transport Layer Security (TLS) protocol. The implementation is named after Secure Sockets Layer (SSL), the deprecated predecessor of TLS, for which support was removed in release 2.3.0. The OpenBSD project forked LibreSSL from OpenSSL 1.0.1g in April 2014 as a response to the Heartbleed security vulnerability, with the goals of modernizing the codebase, improving security, and applying development best practices.

Freeplane is a free, open source software application for creating mind maps (diagrams of connections between ideas), and electronic outlines. Written in Java, it is supported on Windows, Mac OS X and Linux, and is licensed under the GNU GPL version "2 or later".

CinePaint is a free and open source computer program for painting and retouching bitmap frames of films. It is a fork of version 1.0.4 of the GNU Image Manipulation Program (GIMP). It enjoyed some success as one of the earliest open source tools developed for feature motion picture visual effects and animation work. The main reason for this adoption over mainline GIMP was its support for high bit depths (greater than 8-bits per channel) which can be required for film work. The mainline GIMP project later added high bit depths in GIMP 2.9.2, released November 2015. It is free software under th

toolkit for software-defined radios

web browser based on Mozilla Firefox

operating system

ADempiere is an enterprise resource planning (ERP) software package released under a free software license. The verb adempiere in Italian means "to fulfill a duty" or "to accomplish".

thumb|MediaPortal using a Windows XP Media Center Edition|Windows XP MCE [[Windows Media Center-esque skin.]]

Jellyfin is a free and open-source media server and suite of multimedia applications designed to organize, manage, and share digital media files to networked devices. Jellyfin consists of a server application installed on a machine running Linux, Microsoft Windows, or macOS; and another application running on a client device such as a smartphone, tablet, smart TV, streaming media player, game console or in a web browser. Jellyfin also can serve media to DLNA and Chromecast-enabled devices. It is a fork of Emby.

AI coding tool by Google

file manager for Cinnamon

Plex Inc. is an American software and media streaming company. It runs its namesake ad-supported streaming television service and develops media server software that enables users to stream their personal media collections to their devices. Plex had 16 million streaming subscribers as of 2023. It is based in Campbell, California.

Floorp is a free and open-source Japanese web browser based on Firefox.

web browser based on the Chromium web browser

xMule (short for "X11 Mule") is a discontinued free client for the eDonkey peer-to-peer file sharing network intended to bring it to virtually all the major Unix platforms, with a particular emphasis on Linux.

Linux distribution

OpenBoard is a free and open-source interactive whiteboard software compatible with any projector and pointing device.

b2evolution is a content and community management system written in PHP and backed by a MySQL database. It is distributed as free software under the GNU General Public License.

webtrees is a free open source web-based genealogy application intended for collaborative use.