Browse free open source C Software and projects below. Use the toggles on the left to filter open source C Software by OS, license, language, programming language, and project status.
An Open Source DOS emulator to run old DOS games
A unit testing framework for C and C++
A script to find open Wi-Fi connections and the strongest signal
View and manage processes, services and more with this powerful tool.
View and manage processes, services and more with this powerful tool
pkg-config without glib dependency
Audio codecs extracted from Android Open Source Project
Run models like Kimi-K2.5, GLM-5, DeepSeek, gpt-oss, Gemma, Qwen etc.
A portable, multi-platform, command-line driven graphing utility
Ports of Unix and GNU software to MS-Windows
Free drawing software for Windows, Mac OS X, and Linux
An operating system based on the best Windows NT design principles
A fast, portable, simple, and free C/C++ IDE
a free, open source, and cross-platform media player
The Small Device C Compiler (SDCC), targeting 8-bit architectures