Open Source C Software - Page 31
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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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CacheGuard Gateway
Free UTM appliance: firewall, VPN, WAF and antivirus in one ISO.
Securing your network should not require an enterprise budget. CacheGuard is a free open-source network security appliance for startups and growing businesses that need serious protection without the complexity. Install CacheGuard-OS on any x86 machine or VM and get a complete security gateway in under an hour. No plug-ins, no compatibility issues. Everything works out of the box. CacheGuard-OS is not an app, it IS the OS. A fully custom network appliance operating system built from scratch over 20 years, now fully open source. One ISO includes: firewall, VPN, web antivirus, URL filtering, SSL inspection, WAF, reverse proxy, load balancer and QoS. Free for any number of users. Optional paid support available. Source code: https://github.com/cacheguard/CacheGuard-OS Website: https://www.cacheguard.com/ -
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Partclone is a project like the well-known backup utility "Partition Image" a.k.a partimage. Partclone provide utilities to back up used blocks and design for higher compatibility of the file system using supported library like e2fslibs.
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pamtester is a tiny utility program to test the pluggable authentication modules (PAM) facility, specifically designed to help PAM module authors to intensively test their own modules.
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Pixie is a photorealistic renderer that uses a RenderMan-like interface. Features include programmable shading, motion blur, depth of field, raytracing, scan-line rendering, occlusion culling, global illumination, caustics ...
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Arabeyes
A project to increase free Arabic fonts on Unix/Linux
Arabeyes is a Meta project that is aimed at fully supporting the Arabic language in the Unix/Linux environment. It is designed to be a central location to standardize the Arabization process. Arabeyes relies on voluntary contributions. -
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Ur-Quan Masters HD
Ur-Quan Masters High Definition
Ur-Quan Masters HD Mod. An HD remake of Star Control 2. It's the full Ur-Quan Masters game but also featuring a high resolution mode, new features, & new artwork. -
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DartNative
Write iOS&macOS&Android Code using Dart
dart_native is a runtime library that allows Dart to interact with native Objective-C and Java code directly. It enables Flutter and Dart apps to call native platform APIs without writing platform-specific code manually. -
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EdiZon
Homebrew save management, editing tool and memory trainer for Horizon
A Homebrew save file dumper, injector and on-console editor for Horizon, the OS of the Nintendo Switch. Please note if you are using Atmosphere 0.10.0+, you must use the snapshot version of EdiZon. Older versions of EdiZon do not work on the latest Atmosphere. Extraction of game saves. Injection of extracted game saves (Your own and your friends save files). Uploading of savefiles directly. Batch extraction of all save files of all games on the system. Save file editing. Easy to use, scriptable and easily expandable on-console save editing. Lua and Python script support. Built-in save editor updater. On-the-fly memory editing. Cheat Engines like RAM editing. Freezing of values in RAM via Atmosphère's cheat module. Interface for loading, managing, and updating Atmosphère cheats. All packed into one easy-to-use and easy-to-install Homebrew. -
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Jellyfin FFmpeg
FFmpeg for Jellyfin with custom extensions and enhancements
Jellyfin FFmpeg is a customized fork of the FFmpeg multimedia framework specifically tailored for use with the Jellyfin media server ecosystem. It enhances standard FFmpeg functionality by adding patches, fixes, and optimizations that improve compatibility and playback reliability in streaming environments. The project focuses on features that directly benefit media server use cases, such as better HDR and Dolby Vision handling, stable hardware acceleration, and consistent transcoding behavior. It is designed to integrate seamlessly with Jellyfin, ensuring that media is processed efficiently for streaming across different devices. The fork also includes backported fixes and targeted improvements that may not yet be available in upstream FFmpeg. It supports multiple platforms and architectures, enabling flexible deployment in server environments. Overall, it provides a specialized FFmpeg build optimized for media streaming systems. -
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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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OpenResty
High Performance Web Platform Based on Nginx and LuaJIT
OpenResty is a full-fledged web application server that extends Nginx by seamlessly embedding LuaJIT, bundled Nginx core, numerous third-party modules, and Lua libraries—creating a powerful platform for scalable web services, APIs, and gateways. An extensive ecosystem of Lua libraries and third-party Nginx modules that interoperate cohesively. Supports scripting of SSL, process control, regex, pipes, and logging via Lua APIs. Well-supported documentation, Docker tooling, and commercial support options. -
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QMK
Keyboard firmware for Atmel AVR and ARM controllers
QMK (Quantum Mechanical Keyboard) is an open source community centered around developing computer input devices. The community encompasses all sorts of input devices, such as keyboards, mice, and MIDI devices. This is a keyboard firmware based on the tmk_keyboard firmware with some useful features for Atmel AVR and ARM controllers, and more specifically, the OLKB product line, the ErgoDox EZ keyboard, and the Clueboard product line. Keyboards powered by QMK are Planck, Preonic, ErgoDox EZ, Clueboard, Cluepad, Gergo, Georgi, and Atreus. QMK is compatible with lots of other community-supported keyboards and projects. QMK is developed and maintained by Jack Humbert of OLKB with contributions from the community, and of course, Hasu. -
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SGDK 1.90
A free and open development kit for the Sega Mega Drive
SGDK is a free development kit allowing the development of software in C language for the Sega Mega Drive. It contains the development library itself (with the code sources) and some custom tools used to compile resources. SGDK uses the GCC compiler (m68k-elf target) and the libgcc to generate a ROM image. Binaries (GCC 6.3) are provided for Windows OS for convenience, but you need to install it by yourself for other operating systems. Note that SGDK also requires Java (custom tools require it), so you need to have Java installed on your system. SGDK library and custom tools are distributed under the MIT license (see license.txt file). GCC compiler and libgcc are under GNU license (GPL3) and any software build from it (as the SGDK library) is under the GCC runtime library exception license. -
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SameBoy
Game Boy and Game Boy Color emulator written in C
SameBoy is a user friendly, powerful and open source Game Boy, Game Boy Color and Super Game Boy emulator for macOS, Windows and Unix-like platforms. SameBoy is extremely accurate and includes a wide range of both powerful debugging features and user-facing features, making it ideal for both casual players and developers. Of course, SameBoy also has every feature one would expect from an emulator – from save states to scaling filters. Supports Game Boy (DMG), Game Boy Pocket and Light (MGB), Game Boy Color (CGB) and GBC-Mode Game Boy Advance (AGB) emulation. Supports accurate high level emulation of Super Game Boy (SGB; NTSC and PAL) and Super Game Boy 2 (SGB2). High quality 96KHz audio. Battery save support. Save states. Follows the BESS specification for cross-compatibility with other emulators. Includes open source boot ROMs for all emulated models. Complete support for all game-specific palettes in the CGB/AGB boot ROM, for accurate emulation of Game Boy games. -
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TrustKit
Easy SSL pinning validation and reporting for iOS, macOS, tvOS
TrustKit is an open-source framework that makes it easy to deploy SSL public key pinning and reporting in any iOS 12+, macOS 10.13+, tvOS 12+ or watchOS 4+ App; it supports both Swift and Objective-C Apps. Simple API to configure an SSL pinning policy and enforce it within an App. The policy settings are heavily based on the HTTP Public Key Pinning specification. Sane implementation by pinning the certificate's Subject Public Key Info, as opposed to the certificate itself or the public key bits. Reporting mechanism to notify a server about pinning validation failures happening within the App, when an unexpected certificate chain is detected. This is similar to the report-uri directive described in the HPKP specification. The reporting mechanism can also be customized within the App by leveraging pin validation notifications sent by TrustKit. -
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WebAssembly Micro Runtime
WebAssembly Micro Runtime (WAMR)
WebAssembly Micro Runtime (WAMR) is a lightweight, standalone runtime designed to execute WebAssembly modules efficiently across a wide range of environments, from embedded systems and IoT devices to cloud-native applications. Developed under the Bytecode Alliance, WAMR emphasizes a small memory footprint and high configurability, enabling it to operate effectively even in constrained hardware environments. The runtime supports multiple execution modes, including interpreter, Ahead-of-Time (AOT) compilation, and Just-in-Time (JIT) compilation, allowing developers to balance performance and portability depending on their needs. WAMR also provides near-native execution speed through its optimized compilation strategies, making it suitable for performance-critical applications. It includes a modular architecture with components such as a runtime core, an AOT compiler, and application frameworks that facilitate real-world deployment scenarios. -
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Zen C
Write like a high-level language, run like C
Zen C is a minimal yet expressive implementation of the C programming language that aims to balance simplicity with practical capability, making it ideal for educational use, language experimentation, and small-scale systems programming. It provides a clean syntax and semantics that closely mirror classic C while enforcing stricter rules to eliminate common pitfalls like undefined behaviors or hidden conversions that often cause bugs. Zen-C includes a lightweight compiler front-end and runtime that can target multiple platforms, enabling users to compile and run code on both desktop and embedded environments without heavy tooling. Because it prioritizes clarity and predictability, the language makes it easier for learners to understand core systems concepts while still accessing low-level memory control and performance. -
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Zen Kernel
Zen Patched Kernel Sources
Zen Patched Kernel Sources. This is the top level of the kernel’s documentation tree. Kernel documentation, like the kernel itself, is very much a work in progress; that is especially true as we work to integrate our many scattered documents into a coherent whole. ARC processors are highly configurable and several configurable options are supported in Linux. Some options are transparent to software (i.e cache geometries, some can be detected at runtime and configured and used accordingly, while some need to be explicitly selected or configured in the kernel’s configuration utility. -
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libpostal
A C library for parsing/normalizing street addresses around the world
A C library for parsing/normalizing street addresses around the world. Powered by statistical NLP and open geo data. libpostal is a C library for parsing/normalizing street addresses around the world using statistical NLP and open data. The goal of this project is to understand location-based strings in every language, everywhere. Addresses and the locations they represent are essential for any application dealing with maps (place search, transportation, on-demand/delivery services, check-ins, reviews). Yet even the simplest addresses are packed with local conventions, abbreviations and context, making them difficult to index/query effectively with traditional full-text search engines. This library helps convert the free-form addresses that humans use into clean normalized forms suitable for machine comparison and full-text indexing. Though libpostal is not itself a full geocoder, it can be used as a preprocessing step to make any geocoding application smarter, and simpler. -
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nxdumptool
Generates XCI/NSP/HFS0/ExeFS/RomFS/Certificate dumps from Switch
Generates XCI/NSP/HFS0/ExeFS/RomFS/Certificate/Ticket dumps from Nintendo Switch gamecards and installed SD/eMMC titles. This branch is used for the development of the ongoing nxdumptool rewrite. Code is highly experimental and lacks a proper UI at this time, but it has been thoroughly tested and should be safe to use. Proof-of-concept (PoC) builds are provided to test different aspects of the codebase. If a nxdumptool build from the releases page isn't working for whatever you're trying to do (e.g. RomFS dumping), odds are it will work with a PoC build from this particular branch. The old branch will not receive any further updates. A GitHub workflow is used to automatically build each new commit. Individual NCA FS section dumps (select and dump a specific FS section from a specific NCA belonging to a title, in both extracted and raw image forms) (this includes patched RomFS images). -
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stb
stb single-file public domain libraries for C/C++
stb is an open source collection of single-file C libraries created by Sean Barrett (nothings) for graphics, image loading, and utility functions. The repository provides lightweight, public domain libraries that can be easily integrated into projects without external dependencies or complex build processes. Popular components include stb_image.h for image loading, stb_image_write.h for writing images, and stb_truetype.h for font rendering. These libraries are widely used in game development, graphics engines, and multimedia applications due to their simplicity and portability. The project emphasizes ease of use, minimalism, and performance while avoiding bloated frameworks. Maintained and supported by the open source community, stb has become a standard toolkit for C and C++ developers working with images and graphics. -
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waifu2x ncnn Vulkan
waifu2x converter ncnn version, run fast GPU with vulkan
ncnn implementation of waifu2x converter. Runs fast on Intel/AMD/Nvidia/Apple-Silicon with Vulkan API. waifu2x-ncnn-vulkan uses ncnn project as the universal neural network inference framework.
