C is a powerful, general-purpose programming language that's particularly favored for system-level and performance-critical applications. Developed in the early 1970s, it is widely used for operating systems, embedded software, and other low-level applications where efficient interaction with hardware is crucial. For application developers, C offers a rich set of features, including direct access to memory management and low-level data manipulation via pointers, which enables optimized performance. Its minimalistic design, which avoids complex features, makes it a great choice for developers looking to build efficient programs with close-to-metal precision. However, this also means that you are responsible for manual memory management and error handling, which, if not done carefully, can lead to security vulnerabilities such as buffer overflows. Despite its age, C remains relevant due to its portability, being succeptible to various platforms with negligible modifications. Understanding C can greatly enhance an application developer’s ability to write sophisticated, high-performance code and gain insight into the functioning of modern software systems.
View the most prominent open source C projects in the list below. Click on a specific project to view its alternative or complementary packages. Make comparisons and find the best package for your app.
- Display and control your Android device☆146,246Jul 12, 2026Updated last week
- Vim-fork focused on extensibility and usability☆101,305Updated this week
- OBS Studio - Free and open source software for live streaming and screen recording☆74,096Updated this week
- A curated list of awesome C++ (or C) frameworks, libraries, resources, and shiny things. Inspired by awesome-... stuff.☆72,390Updated this week
- Mirror of https://git.ffmpeg.org/ffmpeg.git☆62,325Updated this week
- Git Source Code Mirror - This is a publish-only repository but pull requests can be turned into patches to the mailing list via GitGitGad…☆62,160Updated this week
- 🚀 Awesome list of open source applications for macOS. https://t.me/s/opensourcemacosapps☆49,734Apr 15, 2026Updated 3 months ago
- A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IM…☆42,447Updated this week
- The official Vim repository☆40,665Updated this week
- 📚 C/C++ 技术面试基础知识总结,包括语言、程序库、数据结构、算法、系统、网络、链接装载库等知识及面试经验、招聘、内推等信息。This repository is a summary of the basic knowledge of recruiting job s…☆38,064Aug 24, 2025Updated 11 months ago
- 🎥 Command line media player☆36,143Updated this week
- If you live in the terminal, kitty is made for you! Cross-platform, fast, feature-rich, GPU based.☆34,012Updated this week
- A simple and easy-to-use library to enjoy videogames programming☆34,008Updated this week
- C++ Library Manager for Windows, Linux, and MacOS☆27,291Updated this week
- 🔥🔥超过1000本的计算机经典书籍、个人笔记资料以及本人在各平台发表文章中所涉及的资源等。书籍资源包括C/C++、Java、Python、Go语言、数据结构与算法、操作系统、后端架构、计算机系统知识、数据库、计算机网络、设计模式、前端、汇编以及校招社招各种面经~☆27,117Nov 6, 2025Updated 8 months ago
- A code-searching tool similar to ack, but faster.☆27,096Jun 16, 2024Updated 2 years ago
- World's fastest and most advanced password recovery utility☆26,397Feb 20, 2026Updated 5 months ago
- An incremental parsing system for programming tools☆26,392Updated this week
- FlatBuffers: Memory Efficient Serialization Library☆26,250Jun 22, 2026Updated last month
- ehviewer,用爱发电,快乐前行☆25,526Updated this week
- UNIX-like reverse engineering framework and command-line toolset☆24,424Updated this week
- Embedded graphics library to create beautiful UIs for any MCU, MPU and display type.☆24,176Updated this week
- The Ruby Programming Language☆23,654Updated this week
- Collection of various algorithms in mathematics, machine learning, computer science, physics, etc implemented in C for educational purpos…☆22,271Aug 7, 2024Updated last year
- n³ The unorthodox terminal file manager☆21,719Updated this week
- GoAccess is a real-time web log analyzer and interactive viewer that runs in a terminal in *nix systems or through your browser.☆20,724Updated this week
- Open-source keyboard firmware for Atmel AVR and Arm USB families☆20,554Updated this week
- PlayStation 3 emulator and debugger☆19,238Updated this week
- VLC media player - plays everything, runs anywhere. Code here: https://code.videolan.org/videolan/vlc☆19,092Updated this week
- Run compilers interactively from your web browser and interact with the assembly☆18,927Updated this week
- 图解计算机网络、操作系统、计算机组成、数据库,共 1000 张图 + 50 万字,破除晦涩难懂的计算机基础知识,让天下没有难懂的八股文!🚀 在线阅读:https://xiaolincoding.com☆18,155Nov 27, 2024Updated last year
- A free Windows-compatible Operating System☆17,852Updated this week
- SumatraPDF reader☆17,161Updated this week
- KCP - A Fast and Reliable ARQ Protocol☆16,833Jun 23, 2026Updated last month
- The systemd System and Service Manager☆16,520Updated this week
- Sourcetrail - free and open-source interactive source explorer☆16,489Dec 13, 2021Updated 4 years ago
- Rofi: A window switcher, application launcher and dmenu replacement☆16,266Jul 9, 2026Updated 2 weeks ago
- Bug-fix-only libev port of shadowsocks. Future development moved to shadowsocks-rust☆16,185Jul 15, 2026Updated last week
- Lightweight static analysis for many languages. Find bug variants with patterns that look like source code.☆15,985Updated this week
- Um guia extenso de informações com um vasto conteúdo de várias áreas para ajudar, agregar conhecimento e retirar dúvidas, nesse guia você…☆15,729Jul 16, 2024Updated 2 years ago