Open Source C Software - Page 70
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C Software
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.
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L-ink_Card
Smart NFC & ink-Display Card
L-ink Card is a smart NFC card with an electronic-ink display built into the card form-factor, aimed at solving everyday pain points of IC cards and giving them a “cooler” interface. The project uses an STM32L0-series microcontroller paired with an ST25DV NFC chip, an e-ink screen, and battery management so the card can display dynamic info while also serving as an NFC tag/card. Its functionality may include showing balance, last transaction, QR codes, or other custom info on the e-ink screen, and interfacing with smartphones or readers via NFC. Because it uses e-ink, the card can display static content with minimal power drain, making it practical for real-world card use. The repository includes board design files, firmware, and supporting software for customizing what the card shows. For hardware hackers and smart-card enthusiasts, it’s a fascinating hybrid of microcontroller, low-power display, and NFC tech in a familiar credit-card size. -
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LearnOpenCV
C++ and Python Examples
LearnOpenCV is a large educational repository that provides practical computer vision and deep learning examples in both Python and C++. The project accompanies the LearnOpenCV blog and contains hundreds of hands-on tutorials covering topics such as object detection, image processing, pose estimation, and neural networks. It is structured as a learning resource where each directory corresponds to a specific article or technical walkthrough. The repository supports beginners and advanced practitioners by offering reproducible code that demonstrates real-world computer vision techniques. Many examples integrate popular frameworks like PyTorch, OpenCV, and ONNX to reflect modern AI workflows. Overall, LearnOpenCV functions as a comprehensive applied learning hub for developers building expertise in computer vision and AI. -
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LibVNCServer
LibVNCServer/LibVNCClient are cross-platform C libraries
LibVNCServer, a library for easy implementation of a VNC server. VNC is a set of programs using the RFB (Remote Frame Buffer) protocol. They are designed to "export" a frame buffer via net: you set up a server and can connect to it via VNC viewers. If the server supports WebSockets (which LibVNCServer does), you can also connect using an in-browser VNC viewer like noVNC. LibVNCServer/LibVNCClient are cross-platform C libraries that allow you to easily implement VNC server or client functionality in your program. -
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Liferea
Liferea (Linux Feed Reader), a news reader for GTK/GNOME
Liferea is a feed reader/news aggregator that brings together all of the content from your favorite subscriptions into a simple interface that makes it easy to organize and browse feeds. Its GUI is similar to a desktop mail/news client, with an embedded web browser. -
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Linenoise
A small self-contained alternative to readline and libedit
Linenoise is an ultra-lightweight, self-contained C library that implements line editing (single and multi-line) for terminal applications, intended as a simpler alternative to the much larger GNU Readline or libedit libraries. The library is zero-config, meaning you just include the source file(s) and use it, without heavy dependencies or external configuration. It supports basic editing features: moving the cursor, inserting characters, handling history, tab-completion, and hints, plus a multiplexing mode where the prompt can be hidden/restored when asynchronous output appears. It works on most VT100/ANSI-compatible terminals, and is portable across Unix-like systems. The code is compact (around 850 lines excluding comments) and designed for minimal footprint embedding into other projects (like CLI tools) that need line editing but don’t want the complexity of linking large libraries. -
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Maomaowm
wayland compositor base wlroots and scenefx(dwl but no suckless)
maomaowm is a minimal yet smooth Wayland compositor in Rust, featuring animated tiling layouts and low resource usage. Aimed for performance on older hardware, it supports multi-monitor setups and is available via NixOS and Arch Linux. Users praise its fluidity even on decade-old laptops. -
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MetaCall Core
The ultimate polyglot programming experience
A polyglot runtime that enables seamless execution of multiple programming languages within the same environment, improving interoperability between different codebases. -
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Mojoc
A cross-platform, open-source, pure C game engine for mobile game
Mojoc is an open-source, cross-platform, pure C game engine. It is based on OpenGLES3 and written in C99. It currently works on IOS and Android, but can easily be extended to other platforms, and will support more platforms in the future. In platform-independent code, Mojoc uses only the standard C library, no dependence on third-party libraries. Mojoc uses an extremely lightweight OOC (Object Oriented C) programming model. Mojoc application architecture is based on components, state-machines and is message-driven. Mojoc has been used for a cross-platform Android and IOS game. The samples will show all aspects of the Mojoc features. Each platform will provide native building project for native platform editor. For example Android provides AndroidStudio project, IOS provides XCode project. -
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Onix OS
Onix
onix is a minimalist educational operating system written in Rust, created to demonstrate low-level system design in a safe and modern language. It covers kernel essentials such as interrupts, memory management, and multitasking, and includes a tiny Unix-like shell for user interaction. onix is tailored for x86_64 systems and runs in QEMU, making it ideal for learning OS internals while benefiting from Rust’s type safety and concurrency guarantees. It’s a great project for students or Rustaceans interested in systems programming. -
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Quiet
A private, p2p alternative to Slack and Discord built on Tor & IPFS
Quiet is an alternative to team chat apps like Slack, Discord, and Element that does not require trusting a central server or running one's own. In Quiet, all data syncs directly between a team's devices over Tor with no server required. Quiet is not audited and should not be used when privacy and security are critical. It lacks basic features and probably won't replace your Slack or Discord yet. That said, it works surprisingly well and we use it daily as a Slack replacement. Quiet is for fans of software freedom, decentralization and privacy tech, and for anyone craving a future where humanity can collaborate effectively online without trusting our communities, networks, and data to giant corporations. Quiet is written (mostly) in TypeScript, with Electron and React Native frontends, and welcomes outside contributions! -
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Ravencoin
Ravencoin Core integration/staging tree
Ravencoin is a protocol based on a fork of the Bitcoin code which adds features specifically focused on allowing tokens to be issued on the Ravencoin blockchain. These tokens can have whatever properties the issue of the token decides - so they can be limited in quantity, named, and be issued as securities or as collectibles. Ravencoin is a digital peer-to-peer network that aims to implement a use case-specific blockchain, designed to efficiently handle one specific function: the transfer of assets from one party to another. Built on a fork of the Bitcoin code, Ravencoin was launched on January 3rd, 2018, and is a truly open source project (no ICO or masternodes). It focuses on building a useful technology, with a strong and growing community. The Ravencoin project is launched based on the hard work and continuous effort of over 400 Bitcoin developers who made over 14,000 commits over the life to date of the Bitcoin project. -
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RobotJS
Node.js desktop automation
Node.js desktop automation. Control the mouse, keyboard, and read the screen. RobotJS supports Mac, Windows, and Linux. This is a work in progress so the exported functions could change at any time before the first stable release (1.0.0). Install RobotJS using npm, It's that easy! npm will download one of the prebuilt binaries for your OS. Please ensure you have the required dependencies before installing. Control the mouse by changing the mouse position, left/right clicking, and dragging. Control the keyboard by pressing keys, holding keys down, and typing words. Read pixel color from the screen and capture the screen. Find an image on screen, read pixels from an image. You have prebuilt binaries available, which will allow you to install without compiling! Automate anything! It is easy to use, open source and cross-platform. -
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Shairport Sync
AirPlay audio player
Shairport Sync adds multi-room capability with audio synchronization. Shairport Sync is an AirPlay 1 audio player. Switch to the development branch for a version with limited AirPlay 2 functionality. Shairport Sync plays audio streamed from iTunes, iOS, Apple TV and macOS devices and AirPlay sources such as Quicktime Player and OwnTone, among others. Audio played by a Shairport Sync-powered device stays synchronized with the source and hence with similar devices playing the same source. In this way, synchronized multi-room audio is possible for players that support it, such as iTunes and the macOS Music app. Shairport Sync runs on Linux, FreeBSD and OpenBSD. It does not support AirPlay video or photo streaming. Shairport Sync offers full audio synchronization, a feature of AirPlay that previous implementations do not provide. Full audio synchronization means that audio is played on the output device at exactly the time specified by the audio source. -
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SkiffOS
Any Linux distribution, anywhere
SkiffOS is a lightweight, containerized operating system optimized for embedded systems, edge devices, and single-board computers like the Raspberry Pi. It integrates Buildroot and Docker to create minimal, reproducible OS images that boot directly into a containerized user environment. SkiffOS supports running full Linux distros or custom applications in containers, providing both performance and modularity. It’s ideal for IoT deployments, secure kiosk systems, and remote-controlled appliances. -
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Software Renderer
A shader-based software renderer written from scratch in C89
This is a shader-based software renderer written from scratch in C89 with minimal dependencies, available for Windows, macOS, and Linux. Pre-built binaries for Windows, macOS, and Linux are available for download from the Releases page. To build the software renderer from source, a C89 compiler and development files for your window system are required. Install Visual Studio with C++ support and run build_win32.bat. If the software renderer is launched without arguments, one of the available scenes will be chosen randomly. To display a specific scene, additional arguments should be supplied. Metallic-roughness workflow. Specular-glossiness workflow. Image-based lighting (IBL). Orbital camera controls. PBR material inspector. Perspective correct interpolation. Depth testing. Alpha testing. Alpha blending. Cubemapped skybox. Skeletal animation. Tangent space normal mapping. -
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SwayFX
SwayFX: Sway, but with eye candy
Sway is an incredible window manager, and certainly one of the most well established wayland window managers. However, it is restricted to only include the functionality that existed in i3. This fork ditches the simple wlr_renderer, and replaces it with our fx_renderer, capable of rendering with fancy GLES2 effects. -
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SwiftLaTeX
SwiftLaTeX, a WYSIWYG Browser-based LaTeX Editor
SwiftLaTeX, LaTeX Engines in Browsers with optional WYSIWYG support. We are a big fan of WebAssembly and all computation is done locally. -
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TBOX
A glib-like multi-platform c library
TBOX is a glib-like cross-platform C library that is simple to use yet powerful in nature. The project focuses on making C development easier and provides many modules (.e.g stream, coroutine, regex, container, algorithm ...), so that any developer can quickly pick it up and enjoy the productivity boost when developing in C language. It supports the following platforms: Windows, Macosx, Linux, Android, iOS, BSD and etc. Supports file, data, http and socket source. Supports the stream filter for gzip, charset. etc. Implements stream transfer. Implements the static buffer stream for parsing data. Supports coroutine and implements asynchronous operation. The coroutine library. Provides high-performance coroutine switch. Supports arm, arm64, x86, x86_64. Provides channel interfaces. Provides semaphore and lock interfaces. Supports io socket and stream operation in coroutine. Provides some io servers (http ..) using coroutine. Provides stackfull and stackless coroutines. -
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TEN Framework
TEN, a voice agent framework to create conversational AI.
TEN (Transformative Extensions Network) is a voice agent framework for creating conversational AI applications, focusing on high performance and modularity. -
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Tempesta FW
All-in-one solution for high performance web content delivery
Tempesta FW is an all-in-one open-source solution for high performance web content delivery and advanced protection against DDoS and web attacks. This is a drop-in-replacement for the whole web server frontend infrastructure: an HTTPS load balancer, a web accelerator, a DDoS mitigation system, and a web application firewall (WAF). Tempesta FW is the first and only hybrid of a Web accelerator and a multi-layer firewall. This unique architecture provides seamless integration with the Linux iptables or nftables. Tempesta FW services up to 1.8M HTTP requests per second on the cheapest hardware, which is x3 faster than Nginx or HAProxy. Tempesta TLS is about 40-80% faster than Nginx/OpenSSL and provides up to x4 lower latency. -
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The Algorithms - C #
Collection of various algorithms in mathematics, machine learning
TheAlgorithms/C is an open-source repository that provides implementations of classic algorithms and data structures written in the C programming language. The project is part of the larger “The Algorithms” initiative, which aims to create educational resources by implementing algorithms in multiple programming languages. Within the C repository, contributors implement algorithms from many areas of computer science including sorting, searching, graph processing, mathematics, machine learning, and numerical methods. Each algorithm implementation is written to be readable and well documented so that students and developers can understand how the algorithm works internally. The repository is designed primarily as an educational resource that helps programmers study algorithm design and computational thinking. Contributors from around the world continually add new implementations and improvements, making the repository a collaborative learning project. -
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TheFatRat
Thefatrat a massive exploiting tool
TheFatRat is an exploiting tool that compiles malware with a famous payload, and then the compiled malware can be executed on Linux, Windows, Mac, and Android. TheFatRat provides an easy way to create backdoors and payload which can bypass most anti-virus. This tool is for educational purposes only, usage of TheFatRat for attacking targets without prior mutual consent is illegal. Developers assume no liability and are not responsible for any misuse or damage caused by this program. This tool compiles a malware with popular payload and then the compiled malware can be executed on Windows, Android, and Mac. -
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Tidy
The granddaddy of HTML tools, with support for modern standards
The granddaddy of HTML tools. Supports modern standards. Thanks to the efforts of HTACG and prominent contributors, HTML Tidy has a whole new heartbeat and a whole new life. Tidy tidies HTML and XML. It can tidy your documents by itself, and developers can easily integrate its features into even more powerful tools. Tidy is a console application for macOS, Linux, Windows, UNIX, and more. It corrects and cleans up HTML and XML documents by fixing markup errors and upgrading legacy code to modern standards. libtidy is a C static and dynamic library that developers can integrate into their applications in order to bring all of Tidy’s power to your favorite tools. libtidy is used today in desktop applications, web servers, and more. The HTML Tidy library, libtidy, is used and incorporated into many applications and projects. It offers an extensive API to read in and parse HTML from a file or buffer into a DOM-like node tree, has cleaning and diagnostic services, etc. -
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Tig
Text-mode interface for git
Tig is an ncurses-based text-mode interface for git. It functions mainly as a Git repository browser, but can also assist in staging changes for commit at chunk level and act as a pager for output from various Git commands. Tig allows you to browse changes in a Git repository and can additionally act as a pager for output of various Git commands. When used as a pager, it will display input from stdin and colorize it. When browsing repositories, Tig uses the underlying Git commands to present the user with various views, such as summarized commit log and showing the commit with the log message, diffstat, and the diff. If stdin is a pipe, any log or diff options will be ignored and the pager view will be opened loading data from stdin. The pager mode can be used for colorizing output from various Git commands. All Git command options specified on the command line will be passed to the given command and all will be shell quoted before they are passed to the shell. -
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Tini
A tiny but valid `init` for containers
All Tini does is spawn a single child (Tini is meant to be run in a container), and wait for it to exit all the while reaping zombies and performing signal forwarding. It protects you from software that accidentally creates zombie processes, which can (over time!) starve your entire system for PIDs (and make it unusable). It ensures that the default signal handlers work for the software you run in your Docker image. For example, with Tini, SIGTERM properly terminates your process even if you didn't explicitly install a signal handler for it. It does so completely transparently! Docker images that work without Tini will work with Tini without any changes. Add Tini to your container, and make it executable. Then, just invoke Tini and pass your program and its arguments as arguments to Tini.
