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☆137,151Updated this week
- Vim-fork focused on extensibility and usability☆97,286Updated this week
- OBS Studio - Free and open source software for live streaming and screen recording☆71,053Updated this week
- A curated list of awesome C++ (or C) frameworks, libraries, resources, and shiny things. Inspired by awesome-... stuff.☆70,217Mar 11, 2026Updated last 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…☆59,766Updated this week
- Mirror of https://git.ffmpeg.org/ffmpeg.git☆58,004Updated this week
- 🚀 Awesome list of open source applications for macOS. https://t.me/s/opensourcemacosapps☆47,891Feb 23, 2026Updated 3 weeks ago
- A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IM…☆41,180Updated this week
- The official Vim repository☆40,012Updated 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…☆37,609Aug 24, 2025Updated 6 months ago
- 🎥 Command line media player☆34,462Updated this week
- If you live in the terminal, kitty is made for you! Cross-platform, fast, feature-rich, GPU based.☆31,870Updated this week
- A simple and easy-to-use library to enjoy videogames programming☆31,620Updated 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…☆28,645Mar 5, 2026Updated 2 weeks ago
- A code-searching tool similar to ack, but faster.☆27,235Jun 16, 2024Updated last year
- C++ Library Manager for Windows, Linux, and MacOS☆26,765Updated 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~☆26,470Nov 6, 2025Updated 4 months ago
- FlatBuffers: Memory Efficient Serialization Library☆25,671Updated this week
- World's fastest and most advanced password recovery utility☆25,581Feb 20, 2026Updated last month
- An incremental parsing system for programming tools☆24,288Updated this week
- The Ruby Programming Language☆23,535Updated this week
- UNIX-like reverse engineering framework and command-line toolset☆23,269Updated this week
- Embedded graphics library to create beautiful UIs for any MCU, MPU and display type.☆22,973Mar 13, 2026Updated last week
- ehviewer,用爱发电,快乐前行☆22,981Updated this week
- Collection of various algorithms in mathematics, machine learning, computer science, physics, etc implemented in C for educational purpos…☆21,823Aug 7, 2024Updated last year
- n³ The unorthodox terminal file manager☆21,385Mar 13, 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.☆20,343Mar 4, 2026Updated 2 weeks ago
- Open-source keyboard firmware for Atmel AVR and Arm USB families☆20,189Mar 13, 2026Updated last week
- Run compilers interactively from your web browser and interact with the assembly☆18,627Updated this week
- PlayStation 3 emulator and debugger☆18,341Updated this week
- VLC media player - All pull requests are ignored, please use MRs on https://code.videolan.org/videolan/vlc☆17,847Updated 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☆17,690Nov 27, 2024Updated last year
- A free Windows-compatible Operating System☆17,275Updated this week
- KCP - A Fast and Reliable ARQ Protocol☆16,642Apr 22, 2025Updated 10 months ago
- Sourcetrail - free and open-source interactive source explorer☆16,416Dec 13, 2021Updated 4 years ago
- SumatraPDF reader☆16,260Updated this week
- Bug-fix-only libev port of shadowsocks. Future development moved to shadowsocks-rust☆16,133Updated this week
- Rofi: A window switcher, application launcher and dmenu replacement☆15,832Updated this week
- Um guia extenso de informações com um vasto conteúdo de várias áreas para ajudar, agregar conhecimento e retirar dúvidas, nesse guia você…☆15,610Jul 16, 2024Updated last year
- A static analyzer for Java, C, C++, and Objective-C☆15,544Updated this week