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☆138,158Updated this week
- Vim-fork focused on extensibility and usability☆98,330Updated this week
- OBS Studio - Free and open source software for live streaming and screen recording☆71,492Updated this week
- A curated list of awesome C++ (or C) frameworks, libraries, resources, and shiny things. Inspired by awesome-... stuff.☆70,626Updated 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…☆60,180Updated this week
- Mirror of https://git.ffmpeg.org/ffmpeg.git☆58,693Updated this week
- 🚀 Awesome list of open source applications for macOS. https://t.me/s/opensourcemacosapps☆48,134Mar 25, 2026Updated 2 weeks ago
- A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IM…☆41,225Updated this week
- The official Vim repository☆40,146Apr 4, 2026Updated last 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…☆37,691Aug 24, 2025Updated 7 months ago
- 🎥 Command line media player☆34,713Updated this week
- If you live in the terminal, kitty is made for you! Cross-platform, fast, feature-rich, GPU based.☆32,264Updated this week
- A simple and easy-to-use library to enjoy videogames programming☆31,987Updated this week
- SRS is a simple, high-efficiency, real-time media server supporting RTMP, WebRTC, HLS, HTTP-FLV, HTTP-TS, SRT, MPEG-DASH, and GB28181, wi…☆28,725Updated this week
- A code-searching tool similar to ack, but faster.☆27,228Jun 16, 2024Updated last year
- C++ Library Manager for Windows, Linux, and MacOS☆26,850Updated 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~☆26,540Nov 6, 2025Updated 5 months ago
- FlatBuffers: Memory Efficient Serialization Library☆25,741Apr 3, 2026Updated last week
- World's fastest and most advanced password recovery utility☆25,695Feb 20, 2026Updated last month
- An incremental parsing system for programming tools☆24,629Updated this week
- The Ruby Programming Language☆23,493Updated this week
- UNIX-like reverse engineering framework and command-line toolset☆23,397Updated this week
- Embedded graphics library to create beautiful UIs for any MCU, MPU and display type.☆23,169Apr 3, 2026Updated last week
- ehviewer,用爱发电,快乐前行☆23,347Apr 3, 2026Updated last week
- Collection of various algorithms in mathematics, machine learning, computer science, physics, etc implemented in C for educational purpos…☆21,880Aug 7, 2024Updated last year
- n³ The unorthodox terminal file manager☆21,452Updated 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.☆20,397Apr 1, 2026Updated last week
- Open-source keyboard firmware for Atmel AVR and Arm USB families☆20,255Apr 2, 2026Updated last week
- Run compilers interactively from your web browser and interact with the assembly☆18,668Updated this week
- PlayStation 3 emulator and debugger☆18,448Apr 4, 2026Updated last week
- VLC media player - All pull requests are ignored, please use MRs on https://code.videolan.org/videolan/vlc☆17,977Apr 4, 2026Updated last 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☆17,770Nov 27, 2024Updated last year
- A free Windows-compatible Operating System☆17,375Updated this week
- KCP - A Fast and Reliable ARQ Protocol☆16,654Apr 22, 2025Updated 11 months ago
- Sourcetrail - free and open-source interactive source explorer☆16,434Dec 13, 2021Updated 4 years ago
- SumatraPDF reader☆16,416Updated this week
- Bug-fix-only libev port of shadowsocks. Future development moved to shadowsocks-rust☆16,135Mar 18, 2026Updated 3 weeks ago
- Rofi: A window switcher, application launcher and dmenu replacement☆15,900Mar 29, 2026Updated last week
- Um guia extenso de informações com um vasto conteúdo de várias áreas para ajudar, agregar conhecimento e retirar dúvidas, nesse guia você…☆15,630Jul 16, 2024Updated last year
- A static analyzer for Java, C, C++, and Objective-C☆15,573Updated this week