Software using the zlib license

free software multimedia library

zlib ( or "zeta-lib", ) is a data format and a lossless data compression software library created by Jean-loup Gailly and Mark Adler. The library implements the Deflate algorithm and supports compressing and decompressing data using the zlib data format, the gzip file format, or simply as a Deflate stream.

software library for video game development

open source 3D graphics engine

open source physics engine

programming language family

Box2D is a free open source 2-dimensional physics simulator engine written in C by Erin Catto and published under the MIT license. It has been used in Crayon Physics Deluxe, Limbo, Rolando, Incredibots, Angry Birds, Tiny Wings, Shovel Knight, Transformice, Happy Wheels,, Noita, and many online Flash games, as well as iPhone, iPad and Android games using the Cocos2d or Moscrif game engine and Corona framework. It has also been used in the Unity game engine and is available as an extension for the Scratch-based programming languages TurboWarp (in its Extension Gallery website) and PenguinMod (bu

cross-platform software development library designed to provide a simple application programming interface (API) to various multimedia components in computers

PeerGuardian is a discontinued free and open source program developed by Phoenix Labs. It is capable of blocking incoming and outgoing connections based on IP blacklists. The aim of its use was to block peers on the same torrent download from any visibility of your own peer connection using IP lists. The system is also capable of blocking custom ranges, depending upon user preferences.

GLFW (Graphics Library Framework) is a lightweight utility library for use with OpenGL, OpenGL ES and Vulkan. It provides programmers with the ability to create and manage windows as well as OpenGL and Vulkan contexts, as well as handle joystick, keyboard and mouse input.

PeerBlock is a free and open-source personal firewall that blocks packets coming from, or going to, a maintained list of blacklisted hosts. PeerBlock is the Windows successor to the software PeerGuardian (which is currently maintained only for Linux). It blocks incoming and outgoing connections to IP addresses that are included on blacklists (made available on the Internet), and to addresses specified by the user. PeerBlock mainly uses blacklists provided by iblocklist.com.

Raylib (stylized as raylib) is a cross-platform open-source software development library. The library was made to create graphical applications and games.

physics engine

IKVM (formerly IKVM.NET) is an implementation of Java for Common Language Infrastructure implementations such as Mono and the Microsoft .NET Framework. IKVM is free software, distributed under the zlib permissive free software license.

AngelScript is an open-source game-oriented compiled scripting language developed by Andreas Jönsson at AngelCode.

ClanLib is a video game SDK, supporting Microsoft Windows, macOS, and Linux, with partial support for mobile platforms. It has full hardware accelerated graphics support through OpenGL, and also a software renderer. ClanLib also helps in playing sound, using the Vorbis or MikMod libraries, and has classes for collision detection, GUIs, XML, networking, and other things that may be helpful to a game programmer.