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GNU General Public License, version 3.0

GNU General Public License, version 3.0

32 frameworks

Advanced Linux Sound Architecture

Kind: free software
Implemented in: C
Appeared: 1998

Aleph One

Kind: game engine recreation
Latest version: 1.11.1 (October 1, 2026)
Licence: GNU General Public License, version 3.0

Arx Libertatis

Kind: source port, video game
Based on: Arx Fatalis
Latest version: 1.2.1 (April 10, 2022)

Cafu Engine

Kind: game engine, free and open-source software
Implemented in: C++
Licence: GNU General Public License, version 3.0, MIT License

CPCtelera

Appeared: 2017
First release: July 16, 2017
Latest version: 1.4.2

Cygwin

Kind: application software, free and open-source software
Implemented in: C, C++
Appeared: 1995

D3wasm

Kind: source port
Based on: Dhewm3
Latest version: 1.4.1 (June 18, 2016)

Dhewm3

Kind: source port
Based on: Id Tech 4
Latest version: 1.5.5 (June 8, 2026)

EDGE-Classic

Kind: source port
Based on: EDGE
Latest version: 1.53 (July 11, 2026)

ElixirFM

Kind: morphological analysis engine, morphological generator, software
Implemented in: Haskell
Licence: GNU General Public License, version 3.0

Ethereum

Kind: blockchain framework, cryptocurrency, ongoing project, web service, blockchain, free software, smart contract platform
Implemented in: C, Ruby, Assembly language, JavaScript, XML, C++, Java, Python, AMPL, Go, Cascading Style Sheets, HTML
Appeared: 2015

Gecko

Kind: browser engine
Implemented in: JavaScript, C++, Rust
Appeared: 1998

GZDoom

Kind: free software, source port
Implemented in: C++
Appeared: 2005

LSPosed

Kind: free and open-source software, mobile app
Implemented in: C++, Java
Latest version: 1.9.2 (October 11, 2023)

LZDoom

Kind: source port
Based on: GZDoom
Latest version: 4.14.3 (December 8, 2025)

Mocha Doom

Kind: source port
Implemented in: Java
Based on: Boom, Linux Doom

OpenMW

Kind: game engine, free software
Implemented in: C++
Appeared: 2008

OpenProject

Kind: issue tracking system, project management software, free software, wiki software
Implemented in: Ruby
Appeared: 2012

OpenRA

Kind: game engine recreation
Implemented in: Lua, C#
Appeared: 2010

OpenWar

Kind: game engine recreation
Based on: Warcraft: Orcs & Humans
Licence: GNU General Public License, version 3.0

OSHDB

Kind: geospatial API, application programming interface
Implemented in: Java
Developer: HeiGIT, GIScience Research Group

Polkadot SDK

Implemented in: Rust
Appeared: 2018
First release: 2018

PsyDoom

Kind: source port
Based on: PSX Doom
Latest version: 1.1.1 (June 13, 2023)

Qt

Kind: widget toolkit, software library, computing platform, free software, application framework
Implemented in: C++
Appeared: 1995

QuestZDoom

Kind: source port
Developer: Team Beef
Based on: LZDoom

Shiny

Kind: web framework, software
Implemented in: R
Developer: Carson Paul Sievert, Joe Cheng, Posit PBC, Garrick Aden-Buie

Spatterlight

Kind: interactive fiction interpreter, free software
Latest version: 1.5.5 (October 18, 2026)
Licence: GNU General Public License, version 3.0

Thousand Parsec

Kind: game engine, free and open-source software
Implemented in: C++
Appeared: 2002

Wakanda

Kind: document-oriented database management system, integrated development environment, database management system, proprietary software, free software
Implemented in: JavaScript
Developer: Laurent Ribardière

Weka

Kind: machine learning framework
Implemented in: Java
Developer: University of Waikato

Xash3D

Kind: software library, game engine, free software
Implemented in: C
Latest version: 0.97

Zod Engine

Kind: game engine recreation
Based on: Z
Licence: GNU General Public License, version 3.0