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☆139,135Updated this week
- Vim-fork focused on extensibility and usability☆99,158Updated this week
- OBS Studio - Free and open source software for live streaming and screen recording☆72,037Apr 22, 2026Updated last week
- A curated list of awesome C++ (or C) frameworks, libraries, resources, and shiny things. Inspired by awesome-... stuff.☆70,924Updated 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…☆60,649Updated this week
- Mirror of https://git.ffmpeg.org/ffmpeg.git☆59,346Updated this week
- 🚀 Awesome list of open source applications for macOS. https://t.me/s/opensourcemacosapps☆48,370Apr 15, 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…☆41,696Updated this week
- The official Vim repository☆40,269Apr 25, 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…☆37,767Aug 24, 2025Updated 8 months ago
- 🎥 Command line media player☆34,990Updated this week
- If you live in the terminal, kitty is made for you! Cross-platform, fast, feature-rich, GPU based.☆32,621Updated this week
- A simple and easy-to-use library to enjoy videogames programming☆32,680Updated 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…☆28,782Updated this week
- A code-searching tool similar to ack, but faster.☆27,082Jun 16, 2024Updated last year
- C++ Library Manager for Windows, Linux, and MacOS☆26,976Updated 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~☆26,687Nov 6, 2025Updated 5 months ago
- FlatBuffers: Memory Efficient Serialization Library☆25,838Apr 18, 2026Updated 2 weeks ago
- World's fastest and most advanced password recovery utility☆25,882Feb 20, 2026Updated 2 months ago
- An incremental parsing system for programming tools☆25,090Updated this week
- ehviewer,用爱发电,快乐前行☆23,643Apr 20, 2026Updated last week
- The Ruby Programming Language☆23,556Updated this week
- UNIX-like reverse engineering framework and command-line toolset☆23,561Updated this week
- Embedded graphics library to create beautiful UIs for any MCU, MPU and display type.☆23,407Updated this week
- Collection of various algorithms in mathematics, machine learning, computer science, physics, etc implemented in C for educational purpos…☆21,970Aug 7, 2024Updated last year
- n³ The unorthodox terminal file manager☆21,515Apr 19, 2026Updated last week
- GoAccess is a real-time web log analyzer and interactive viewer that runs in a terminal in *nix systems or through your browser.☆20,464Apr 23, 2026Updated last week
- Open-source keyboard firmware for Atmel AVR and Arm USB families☆20,320Updated this week
- Run compilers interactively from your web browser and interact with the assembly☆18,723Updated this week
- PlayStation 3 emulator and debugger☆18,637Apr 25, 2026Updated last week
- VLC media player - All pull requests are ignored, please use MRs on https://code.videolan.org/videolan/vlc☆18,159Apr 25, 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☆17,826Nov 27, 2024Updated last year
- A free Windows-compatible Operating System☆17,464Updated this week
- KCP - A Fast and Reliable ARQ Protocol☆16,698Apr 22, 2025Updated last year
- SumatraPDF reader☆16,590Updated this week
- Sourcetrail - free and open-source interactive source explorer☆16,443Dec 13, 2021Updated 4 years ago
- The systemd System and Service Manager☆16,247Updated this week
- Bug-fix-only libev port of shadowsocks. Future development moved to shadowsocks-rust☆16,160Mar 18, 2026Updated last month
- Rofi: A window switcher, application launcher and dmenu replacement☆15,980Apr 13, 2026Updated 2 weeks ago
- Um guia extenso de informações com um vasto conteúdo de várias áreas para ajudar, agregar conhecimento e retirar dúvidas, nesse guia você…☆15,650Jul 16, 2024Updated last year