Open Source C Software - Page 30
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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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GNU Prolog
The GNU Prolog native compiler
GNU Prolog is a free implementation (under GPL) of the logic programming language PROLOG. It can compile to native machine code which is extremely fast in execution. Another feature is the included constraint solver. -
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A GPU memory test utility for NVIDIA and AMD GPUs using well established patterns from memtest86/memtest86+ as well as additional stress tests. The tests are designed to find hardware and soft errors. The code is written in CUDA and OpenCL.
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Allegro is a cross-platform library intended for use in computer games and other types of multimedia programming.
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An OpenGL Billard Game based on foobillard 3.0a with patches, new features (hud, jumpshots, correct detection of lost balls, more sound and graphics etc). Optimized for touch. New designed mouse / touch-control. On Facebook: www.facebook.com/Foobillardplus Some Videos: http://www.youtube.com/user/foobillardplus/videos
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OpenSC
OpenSC - tools and libraries for smart cards
The OpenSC project allows the use of PKCS #15 compatible SmartCards and other cryptographic tokens (e.g. the Aladdin eToken) in UNIX compatible operating systems. OpenSC can use PC/SC Lite or CT-API as its reader backend. https://github.com/OpenSC/OpenSC/wiki/OpenSC-Services -
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Clicker is a project for a Multitasking Open-source operating system written from scratch. based on a modular micro kernel. We want to explore new way of designing and using OSes :) [newz: PCI, NE2K and VBE]
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This program provides the Gnome community with a powerful and easily extensible TV viewer. It will have most of the features you have in other TV viewers for Unix/Windows, but keeping the program open through plugins to fit your particular needs.
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gltron was inspired by the film tron - actually, more by all the games that where inspired by the film tron :-) It's a game for one to four players, the objective is not to drive into a wall.
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In-circuit programming (ISP) tool for the NXP (Philips) LPC800/LPC1100/LPC1200/LPC1300/LPC1700/LPC1800/LPC2000/LPC4300 series ARM7/Cortex-M0/Cortex-M0+/Cortex-M3/Cortex-M4 microcontrollers
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HDF5
Official HDF5® Library Repository
HDF5 (Hierarchical Data Format v5) is a widely-used data management library and file format for storing large and complex scientific data sets efficiently. -
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HP Socket
High Performance TCP/UDP/HTTP communication component
Server Based on IOCP/EPOLL communication model, combined with technology of memory pool, private heap etc., efficient memory management is implemented to support large scale and high concurrent communication scenarios. Agent The Agent component is essentially a Multi-Client component that uses the same technical architecture as the Server component. An Agent component object can create and efficiently handle large-scale Socket connections at the same time. Client Based on Event-Select/POLL communication model, each component object creates a communication thread and manages a Socket connection. Client components are suitable for small-scale client scenarios. -
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NVTOP
GPU & Accelerator process monitoring for AMD, Apple, Huawei, Intel
NVTOP stands for Neat Video card TOP, a (h) top-like task monitor for GPUs and accelerators. It can handle multiple GPUs and print information about them in a htop-familiar way. Currently supported vendors are AMD (Linux AMD GPU driver), Apple (limited M1 & M2 support), Huawei (Ascend), Intel (Linux i915 driver), NVIDIA (Linux proprietary divers), and Qualcomm Adreno (Linux MSM driver). -
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OpenPrinting CUPS
OpenPrinting CUPS Sources
OpenPrinting CUPS is the most current version of CUPS, a standards-based, open-source printing system for Linux® and other Unix®-like operating systems. CUPS supports printing to AirPrint™ and IPP Everywhere™ printers. -
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Portable OpenSSH
Complete implementation of the SSH protocol
Portable OpenSSH is a cross-platform implementation of the Secure Shell (SSH) protocol that provides encrypted communication and secure remote access over untrusted networks. It originates from the OpenSSH project maintained by the OpenBSD community and adapts the core OpenBSD implementation so it can run on many operating systems including Linux, macOS, and Windows. The software suite enables administrators and developers to securely log into remote systems, transfer files, and create encrypted tunnels for network traffic. By encrypting all communications between client and server, it protects against threats such as eavesdropping, connection hijacking, and data interception. The portable distribution follows the development of the main OpenSSH codebase while adding compatibility layers for multiple operating systems and authentication systems. -
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ReactOS
A free Windows-compatible Operating System
Imagine running your favorite Windows applications and drivers in an open-source environment you can trust. That's the mission of ReactOS! Being part of a Worldwide Community, as ReactOS is, will boost your own personal skills to a highest new level. Working teamed with people from different countries will enhance your team-working, empathy and English. All these skills are really appreciated by companies out there in job interviews. Contributing your free time into an open source project seems to be also trending and marks a difference within you and another candidate for the same job. If you want to learn about coding and Windows internals, you won’t find a better real field case. You’ll find in ReactOS the possibility to move from the book theory to the practical cases. This is the main reason why top-most software companies offer ReactOS Devs jobs opportunities. -
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TFT_eSPI
Arduino and PlatformIO IDE compatible TFT library
An Arduino IDE compatible graphics and fonts library for 32-bit processors. The library is targeted at 32-bit processors, it has been performance-optimized for STM32, ESP8266 and ESP32 types. The library can be loaded using the Arduino IDE's Library Manager. Direct Memory Access (DMA) can be used with the ESP32, RP2040, and STM32 processors to improve rendering performance. "Four wire" SPI and 8 bit parallel interfaces are supported. Due to the lack of GPIO pins, the 8-bit parallel interface is NOT supported on the ESP8266. 8 bit parallel interface TFTs (e.g. UNO format mcufriend shields) can use with the STM32 Nucleo 64/144 range or the UNO format ESP32. ILI9341 and ST7796 SPI-based displays are recommended as starting points for experimenting with this library. The library supports some TFT displays designed for the Raspberry Pi (RPi) that are based on a ILI9486 or ST7796 driver chip with a 480 x 320-pixel screen. -
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Wi-PWN
ESP8266 firmware for performing deauthentication attacks
ESP8266 firmware for performing deauthentication attacks, with ease. Wi-PWN is a firmware that performs death attacks on cheap Arduino boards. The ESP8266 is a cheap microcontroller with built-in Wi-Fi. It contains a powerful 160 MHz processor and it can be programmed using Arduino. A deauthentication attack is often confused with Wi-Fi jamming, as they both block users from accessing Wi-Fi networks. The 802.11 Wi-Fi protocol contains a so-called deauthentication frame. It is used to disconnect clients safely from a wireless network. Because these management packets are unencrypted, you just need the MAC to address of the Wi-Fi router and of the client device which you want to disconnect from the network. You don’t need to be in the network or know the password, it’s enough to be in its range. With the 802.11w-2009 updated standards, management frames are encrypted by default. -
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Zelda 64: Recompiled
Static recompilation of Majora's Mask for PC
Zelda 64: Recompiled is a specialized recompilation project built on top of N64Recomp, focused on reconstructing The Legend of Zelda: Ocarina of Time and related N64 titles into native, compilable code for modern systems. It takes original game binaries and translates them into structured C code that can be compiled and run without requiring an emulator, enabling more efficient execution and deeper access to the game’s internals. The project is designed to preserve gameplay accuracy while providing opportunities for enhancement, including graphical improvements, performance optimizations, and expanded modding capabilities. By leveraging the N64Recomp framework, it benefits from a standardized approach to static recompilation while tailoring the process to the specific architecture and behavior of Zelda titles. -
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ncdu
Ncdu is a disk usage analyzer with an ncurses interface
Ncdu is a disk usage analyzer with an ncurses interface. It is designed to find space hogs on a remote server where you don’t have an entire graphical setup available, but it is a useful tool even on regular desktop systems. Ncdu aims to be fast, simple and easy to use, and should be able to run in any minimal POSIX-like environment with ncurses installed. -
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pytz
Python historical timezone library and database
pytz is a Python library that brings the IANA/Olson timezone database into the Python runtime, enabling accurate, cross-platform timezone calculations for all the world’s timezones. It addresses a major limitation of Python’s built-in datetime.tzinfo by providing consistent support for daylight-saving transitions, historical offset changes, and ambiguous times (such as the end of DST). With pytz, developers can convert naïve datetime objects into timezone-aware ones, shift between timezones, and safely perform arithmetic across DST boundaries with methods like localize() and normalize(). Although Python 3.9 and newer include better built-in timezone support (via zoneinfo and external packages like tzdata), pytz remains widely used—especially in legacy codebases or in environments where backward compatibility matters. -
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shadowhook
Android inline hook library which supports thumb, arm32 and arm64
shadowhook is an open-source native code hooking library for Android — designed to let developers intercept and override native (C/C++) functions inside Android apps at runtime. It supports both ARM32 and ARM64 architectures (and the respective “thumb” instruction set) and works across a wide range of Android OS versions. The library allows you to specify hook targets either by function address or by library name + function name, and it automatically handles newly loaded shared libraries (ELFs), ensuring hooks remain effective even when code is dynamically loaded at runtime. ShadowHook strives to be stable and safe for production use: it automatically avoids circular-call recursion between original and proxy functions, and supports unwind/unwind-safe proxy functions (CFI/FP unwind) so that backtraces, debugging, and stack unwinding remain correct. It also offers optional intercept and logging capabilities, letting developers record hooked calls. -
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wrk
Modern HTTP benchmarking tool
wrk is a modern, command-line HTTP benchmarking tool engineered for high performance, capable of generating substantial load using a single multi-core CPU by leveraging multithreading and scalable event notification systems. An optional LuaJIT script can perform HTTP request generation, response processing, and custom reporting. Details are available in SCRIPTING and several examples are located in scripts. The machine running wrk must have a sufficient number of ephemeral ports available and closed sockets should be recycled quickly. To handle the initial connection burst the server's listen(2) backlog should be greater than the number of concurrent connections being tested. -
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The Sleuth Kit is a C++ library and collection of open source file system forensics tools that allow you to, among other things, view allocated and deleted data from NTFS, FAT, FFS, EXT2, Ext3, HFS+, and ISO9660 images.
