Open Source C Software - Page 7

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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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  • 1
    RedPanda C++

    RedPanda C++

    A powerful, lighweight and cross-platform C/C++ IDE

    Red Panda C++ is a lightweight yet powerful C/C++/GNU Assembly IDE. It provides users with coding experiences like vs code and CLion, but is much lightweighted than them. Highlights of its new and enhanced feature: * High DPI support * Code intellisense (Code Completion suggestion while editing). * Syntax checking while editing * Greatly improved debugger (local \ call stack \ memory view) * Theme and color scheme. * UTF-8 encoding support * Greatly improved search/replace function; File/Replace in files * Refactor: rename symbols * Cross Platform: Windows and Linux * SDCC Compiler Support
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    Downloads: 950 This Week
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  • 2
    Klavaro Touch Typing Tutor

    Klavaro Touch Typing Tutor

    A very efficient tutor.

    A touch typing tutor very flexible, supporting customizable keyboard layouts. You can edit and save new or unknown keyboard layouts, as the basic course was designed to not depend on specific ones. Also, there are some charts about the learning process.
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    Downloads: 923 This Week
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  • 3
    Scid vs. PC

    Scid vs. PC

    Chess Database and Toolkit program

    "Shane's Chess Information Database" is a huge chess toolkit with extensive database, analysis and chess-playing features. Scid vs. PC is a usability and bug-fix fork of Scid. It has many interface fixes and improvements, and is fully compatible with Scid's .si4 databases. New features include a rewritten Gamelist, Computer Tournament, and FICS, Tree, Book and Graph improvements.
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    Downloads: 862 This Week
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  • 4
    WireGuard for iOS and macOS

    WireGuard for iOS and macOS

    An application for iOS and for macOs

    WireGuard for iOS and macOS is the official WireGuard client implementation for Apple platforms, including iOS, iPadOS, and macOS. The project delivers a native Swift-based application that integrates with Apple’s Network Extension framework to provide secure VPN tunneling with strong performance and reliability. It offers a polished graphical interface that allows users to create, import, and manage WireGuard configurations while maintaining the protocol’s emphasis on simplicity and modern cryptography. The software is designed to work seamlessly within Apple’s ecosystem, supporting keychain storage, system networking controls, and platform security features. Because WireGuard is known for its lean architecture, the Apple client maintains efficient resource usage while delivering fast connection speeds. Overall, wireguard-apple is intended for Apple device users and organizations that require a secure, modern VPN solution fully aligned with the Apple networking stack.
    Downloads: 192 This Week
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  • 5
    cnc-ddraw

    cnc-ddraw

    GDI, OpenGL and Direct3D 9 re-implementation of the DirectDraw API

    GDI, OpenGL and Direct3D 9 re-implementation of the DirectDraw API for classic games for better compatibility with Windows 2000, XP, Vista, 7, 8, 10, 11, Wine (Linux/macOS) and Virtual Machines. cnc-ddraw can fix compatibility issues in older games, such as black screen, bad performance, crashes or defective Alt+Tab. Supports Windows 2000, XP, Vista, 7, 8, 10, 11, Wine (Linux/macOS) and Virtual Machines. GDI / OpenGL / Direct3D 9 renderer (With automatic renderer selection) Upscaling via glsl shaders. Windowed Mode / Fullscreen Exclusive Mode / Borderless Mode. Alt+Enter support to switch quickly between Fullscreen and Windowed mode. Automatically saves and restores window position/size/state. FPS Limiter, VSync, optional mouse sensitivity scaling. If you use cnc-ddraw with a game that got its own windowed mode built in then make sure you disable the games own windowed mode first.
    Downloads: 191 This Week
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  • 6
    raylib

    raylib

    A simple and easy-to-use library to enjoy videogames programming

    raylib is highly inspired by Borland BGI graphics lib and by XNA framework. Do you want to see all functions available in raylib? Check raylib cheatsheet. raylib is a programming library to enjoy videogames programming; no fancy interface, no visual helpers, no auto-debugging, just coding in the most pure spartan-programmers way. raylib has received several recognitions in the last years and many people have written about the library. Here there are the main awards received from Google and Epic Games. raylib supports multiple target platforms, it has been tested in the following platforms but, technically, any platform that supports C language and OpenGL graphics is valid for raylib or can be very easily ported to. raylib can be combined with several extra libraries for additional functionality, some of those libraries are already used internally while others are provided for user integration, most of these libraries are single-file header-only with no external dependencies.
    Downloads: 189 This Week
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  • 7
    QPDF

    QPDF

    PDF transformation/manipulation program + library

    QPDF is a C++ library and set of programs that inspect and manipulate the structure of PDF files. It can encrypt and linearize files, expose the internals of a PDF file, and do many other operations useful to end users and PDF developers.
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    Downloads: 1,024 This Week
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  • 8
    llama.cpp

    llama.cpp

    Port of Facebook's LLaMA model in C/C++

    The llama.cpp project enables the inference of Meta's LLaMA model (and other models) in pure C/C++ without requiring a Python runtime. It is designed for efficient and fast model execution, offering easy integration for applications needing LLM-based capabilities. The repository focuses on providing a highly optimized and portable implementation for running large language models directly within C/C++ environments.
    Downloads: 183 This Week
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  • 9
    TDM-GCC Compiler

    TDM-GCC Compiler

    GCC for 32-bit and 64-bit Windows with a real installer & updater

    TDM-GCC is now hosted on Github at https://jmeubank.github.io/tdm-gcc/. The most recent stable releases from the GCC compiler project, for 32-bit and 64-bit Windows, cleverly disguised with a real installer & updater.
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    Downloads: 774 This Week
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  • 10
    RHash
    RHash (Recursive Hasher) is a console utility for computing and verifying hash sums of files. It supports CRC32, CRC32C, MD4, MD5, SHA1, SHA256, SHA512, SHA3, AICH, ED2K, DC++ TTH, BTIH, Tiger, GOST R 34.11-2012, RIPEMD-160, HAS-160, EDON-R, and Whirlpool.
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    Downloads: 1,122 This Week
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  • 11
    lmbench is a suite of simple, portable, ANSI/C microbenchmarks for UNIX/POSIX. In general, it measures two key features: latency and bandwidth. lmbench is intended to give system developers insight into basic costs of key operations.
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    Downloads: 4,849 This Week
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  • 12
    Uniform Server

    Uniform Server

    A free lightweight Windows Apache MySQL and PHP Server Solution.

    Uniform Server is a free lightweight WAMP server solution for Windows. Build using a modular design approach, it includes the latest versions of Apache, MySQL or MariaDB, PHP (with version switching), phpMyAdmin or Adminer. No installation required! No registry dust! Just unpack and fire up! ------- Note: The latest version of Uniform Server requires a **64-bit version** of Windows. -------
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    Downloads: 819 This Week
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  • 13

    milter manager

    Protects you from spam mails and virus mails effectively with milter

    This project has been moved to https://milter-manager.osdn.jp/ milter manager protects you from spam mails and virus mails effectively with milter. milter manager has embedded Ruby interpreter to control milters flexibly. milter manager can be used with Sendmail on Postfix on Ubuntu, CentOS, FreeBSD and so on.
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    Downloads: 2,674 This Week
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  • 14
    Nikkho

    Nikkho

    Javier Gutiérrez Chamorro (Guti) Open source projects

    Javier Gutiérrez Chamorro (Guti) Open source projects Author's website: https://www.javiergutierrezchamorro.com
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    Downloads: 904 This Week
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  • 15
    A comprehensive software suite for reading barcodes. Supports EAN/UPC, Code 128, Code 39, Interleaved 2 of 5 and QR Code. Includes libraries and applications for decoding captured barcode images and using a video device (eg, webcam) as a barcode scanner.
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    Downloads: 822 This Week
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  • 16

    UFTP

    Encrypted UDP based FTP with multicast

    UFTP is an encrypted multicast file transfer program, designed to securely, reliably, and efficiently transfer files to multiple receivers simultaneously. This is useful for distributing large files to a large number of receivers, and is especially useful for data distribution over a satellite link (with two way communication), where the inherent delay makes any TCP based communication highly inefficient. The multicast encryption scheme is based on TLS with extensions to allow multiple receivers to share a common key. UFTP also has the capability to communicate over disjoint networks separated by one or more firewalls (NAT traversal) and without full end-to-end multicast capability (multicast tunneling) through the use of a UFTP proxy server. These proxies also provide scalability by aggregating responses from a group of receivers.
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    Downloads: 1,342 This Week
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  • 17
    BlackHole

    BlackHole

    BlackHole is a modern macOS audio loopback driver

    BlackHole is a modern virtual audio loopback driver for macOS that allows audio to be routed between applications with zero additional latency. It is widely used by musicians, streamers, developers, and audio engineers who need reliable internal audio routing without external hardware. BlackHole supports a wide range of sample rates and configurable channel counts, making it flexible for both simple and advanced audio workflows. The driver integrates directly with macOS Core Audio and appears in Audio MIDI Setup and supported audio applications. Designed with performance and stability in mind, BlackHole works on both Intel and Apple Silicon Macs without requiring kernel extensions or system security modifications. As an open-source project, it offers transparency, customization options, and active community-driven development.
    Downloads: 176 This Week
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  • 18
    Box64

    Box64

    Linux Userspace x86_64 Emulator with a twist, targeted at ARM64 Linux

    Box86 lets you run x86 Linux programs (such as games) on non-x86 Linux systems, like ARM (the host system needs to be 32bit little-endian). Because box86 uses the native versions of some “system” libraries, like libc, libm, SDL, and OpenGL, it’s easy to integrate and use with most applications, and performance can be surprisingly high in some cases. Many games already work without much tweaking, for example: WorldOfGoo, Airline Tycoon Deluxe, and FTL. Many of the GameMaker Linux games also run fine. (There’s a long list, among them are Undertale, A Risk of Rain, or Cook Serve Delicious.) Box64 is the 64bits version of Box86. It is used to run x86_64 binaries on ARM64 (i.e. aarch64) Linux. There are some YouTube channels where you can see box86 and box64 in action: MicroLinux, PILabs, and The Byteman at least.
    Downloads: 175 This Week
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  • 19
    UltraDefrag

    UltraDefrag

    Increase your system performance with this easy to use tool

    Please note, here you can find the latest open source release of UltraDefrag (7.1.4). The most recent UltraDefrag release (15.0.0) can be found on our official website: https://ultradefrag.net UltraDefrag is a disk defragmenter for Windows, which supports defragmentation of locked system files by running during the boot process. It is easy to use without any complicated scripting or a huge load of configuration settings. You can filter the files processed by size, number of fragments, file name and path. You can terminate the process early by specifying an execution time limit.
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    Downloads: 847 This Week
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  • 20

    The GNU netcat

    The networking swiss army knife

    A rewrite of the well-known networking tool, but more portable, with new features and fully GNU compliant.
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    Downloads: 4,632 This Week
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  • 21

    OptiPNG

    Advanced PNG optimization program

    OptiPNG is a PNG optimizer that recompresses image files to a smaller size, without losing any information. This program also converts external formats (BMP, GIF, PNM and TIFF) to optimized PNG, and performs PNG integrity checks and corrections.
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    Downloads: 842 This Week
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  • 22
    mcrypt, and the accompanying libmcrypt, are intended to be replacements for the old Unix crypt, except that they are under the GPL and support an ever-wider range of algorithms and modes.
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    Downloads: 798 This Week
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  • 23
    Arrow OS

    Arrow OS

    It is an AOSP based project with an aim of keeping things clean!

    ArrowOS is an AOSP based open source project started with the aim of keeping things simple, clean and neat, both for the Android system and users. We understand the pain of unnecessary and sometimes rarely used mods/features being shipped with custom roms nowadays which may end up causing battery drains and/or memory leaks. This is being strictly avoided on our side keeping everything to a bare minimum, delivering the stable performance all the time without destroying the AOSP interface. With users getting more used to tweaks and features, we added just the right stuff that will be actually USEFUL at the end of the day.
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    Downloads: 742 This Week
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  • 24
    WSL2-Linux-Kernel

    WSL2-Linux-Kernel

    The source for the Linux kernel used in Windows Subsystem for Linux 2

    The WSL2-Linux-Kernel repo contains the kernel source code and configuration files for the WSL2 kernel. If you discover an issue relating to WSL or the WSL2 kernel, please report it on the WSL GitHub project. It is not possible to report issues on the WSL2-Linux-Kernel project. Instructions for building an x86_64 WSL2 kernel with an Ubuntu distribution are provided. The number one way that we recommend you run Linux distributions is by installing Windows Terminal. Using Windows Terminal enables you to open multiple tabs or window panes to display and quickly switch between multiple Linux distributions or other command lines (PowerShell, Command Prompt, PowerShell, Azure CLI, etc). You can fully customize your terminal with unique color schemes, font styles, sizes, background images, and custom keyboard shortcuts.
    Downloads: 167 This Week
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  • 25
    FreeBASIC Compiler
    Open-source, free, multi-platform BASIC compiler, with syntax similar MS-QuickBASIC (including the GFX statements), that adds new features such as pointers, unsigned data types, inline assembly, a pre-processor and many others.
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    Downloads: 898 This Week
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