Open Source C Software - Page 2

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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
    Library and command line tools for XZ and LZMA compressed files
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    Downloads: 67,099 This Week
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  • 2
    DOSBox

    DOSBox

    An Open Source DOS emulator to run old DOS games

    DOSBox emulates a full x86 pc with sound and DOS. Its main use is to run old DOS games on platforms which don't have DOS (Windows 7, 8, 8.1 and 10 / Linux / FreeBSD / Mac OS X)
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    Downloads: 19,253 This Week
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  • 3

    Cutter

    A unit testing framework for C and C++

    Cutter is a Unit Testing Framework for C and C++. Interface of Cutter is easy to write and easy to debug your code.
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    Downloads: 37,397 This Week
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  • 4

    AutoAP

    A script to find open Wi-Fi connections and the strongest signal

    AutoAP is a script that continuously scans for open Wi-Fi connections, tests them for validity, and connects to the strongest signal. If the connection is lost, the script scans again and finds the strongest valid signal again, and maintains a continuous connection to the internet in a mobile or portable environment. The script paremeters are highly configurable, including ability to configure secure connections. AutoAP is an add on to DD-WRT that allows routers to continuously scan for and connect to open (and predefined WEP) wireless networks. Ultimately the goal is to develop an easily deployable firmware that facilitates fast and easy mesh network creation. Typically, you would use this script on your router while in Repeater Mode, Client Mode, or Client-Bridged Mode.
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    Downloads: 18,431 This Week
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  • 5
    Comgt is a command line tool for controlling, configuring and interacting with Option Wireless 3G and 2G ( HSDPA, UMTS, EDGE, GPRS, GSM) data devices within the Linux environment.
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    Downloads: 20,287 This Week
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  • 6
    LIBPNG: PNG reference library
    Reference library for supporting the Portable Network Graphics (PNG) format.
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    Downloads: 94,002 This Week
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  • 7
    Process Hacker

    Process Hacker

    View and manage processes, services and more with this powerful tool.

    Process Hacker is a free and open source process viewer. This multi-purpose tool will assist you with debugging, malware detection and system monitoring.
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    Downloads: 15,637 This Week
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  • 8
    System Informer

    System Informer

    View and manage processes, services and more with this powerful tool

    System Informer is a free and open source process viewer. This multi-purpose tool will assist you with debugging, malware detection and system monitoring.
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    Downloads: 18,699 This Week
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  • 9

    pkg-config-lite

    pkg-config without glib dependency

    pkg-config-lite is based on pkg-config, but is built with a glib code snippet which eliminates the glib dependency, so it is possible once again to build and run pkg-config without dependencies. Version: 0.28-1 (based on pkg-config-0.28)
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    Downloads: 30,804 This Week
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  • 10

    opencore-amr

    Audio codecs extracted from Android Open Source Project

    Library of OpenCORE Framework implementation of Adaptive Multi Rate Narrowband and Wideband (AMR-NB and AMR-WB) speech codec. Library of VisualOn implementation of Adaptive Multi Rate Wideband (AMR-WB) encoder and Advanced Audio Coding (AAC) encoder. Modified library of Fraunhofer AAC decoder and encoder.
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    Downloads: 14,450 This Week
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  • 11
    Ollama

    Ollama

    Run models like Kimi-K2.5, GLM-5, DeepSeek, gpt-oss, Gemma, Qwen etc.

    Ollama is an open-source platform that enables developers to run large language models locally on their own machines. It simplifies working with modern AI models by providing a unified interface to download, manage, and interact with them. Users can run models like Llama, Gemma, Qwen, and others directly from the command line or through APIs. Ollama also integrates with popular developer tools and AI agents, allowing seamless workflows across coding environments and applications. It supports REST APIs, Python, and JavaScript SDKs, making it easy to build AI-powered features into software projects. Overall, Ollama focuses on privacy, local-first AI execution, and developer-friendly tooling for building with open models.
    Downloads: 3,018 This Week
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  • 12
    gnuplot

    gnuplot

    A portable, multi-platform, command-line driven graphing utility

    A famous scientific plotting package, features include 2D and 3D plotting, a huge number of output formats, interactive input or script-driven options, and a large set of scripted examples.
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    Downloads: 13,059 This Week
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  • 13
    mpg123
    This is the fast and Free (LGPL license) real time MPEG Audio Layer 1, 2 and 3 decoding library and console player. It uses floating point or integer math, along with several special optimizations (3DNow, SSE, ARM, ...) to make it most efficient.
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    Downloads: 13,274 This Week
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  • 14

    ezwinports

    Ports of Unix and GNU software to MS-Windows

    This project is a collection of ports to MS-Windows of GNU and Unix software packages, which either don't have precompiled Windows binaries available, or whose existing ports are buggy or broken. All the ports are built using the MinGW development environment, with or without MSYS.
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    Downloads: 15,461 This Week
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  • 15
    ngspice
    Ngspice project aims to improve the spice3f5 circuit simulator.
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    Downloads: 11,752 This Week
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  • 16
    Libtirpc is a port of Suns Transport-Independent RPC library to Linux. It's being developed by the Bull GNU/Linux NFSv4 project. The upstream git tree is at: git://linux-nfs.org/~steved/libtirpc
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    Downloads: 68,143 This Week
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  • 17
    SoX is the Swiss Army Knife of sound processing utilities. It can convert audio files to other popular audio file types and also apply sound effects and filters during the conversion.
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    Downloads: 11,711 This Week
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  • 18
    Dia Diagram Editor

    Dia Diagram Editor

    Free drawing software for Windows, Mac OS X, and Linux

    Dia Diagram Editor is free Open Source drawing software for Windows, Mac OS X and Linux. Dia supports more than 30 different diagram types like flowcharts, network diagrams, database models. More than a thousand readymade objects help to draw professional diagrams. Dia can read and write a number of different raster and vector image formats. Software developers and database specialists can use Dia as a CASE tool to generate code skeletons from their drawings. Dia can be scripted and extended using Python.
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    Downloads: 12,241 This Week
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  • 19
    Tools and patches for the Linux Diskquota system as part of the Linux kernel
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    Downloads: 11,720 This Week
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  • 20
    ReactOS

    ReactOS

    An operating system based on the best Windows NT design principles

    ReactOS is an open source effort to develop a quality operating system that is compatible with applications and drivers written for the Microsoft Windows NT family of operating systems (NT4, 2000, XP, 2003).
    Leader badge
    Downloads: 8,828 This Week
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  • 21
    hdparm - get/set ATA/SATA drive parameters under Linux
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    Downloads: 9,590 This Week
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  • 22
    Dev-C++ for Windows 10/8/7

    Dev-C++ for Windows 10/8/7

    A fast, portable, simple, and free C/C++ IDE

    Coding Boot Camp Learning to program? Check out the free boot camp from Embarcadero which runs from Monday, August 22nd to Friday, August 26th. https://learndelphi.org/boot-camp-2022/ Embarcadero Dev-C++ is a new and improved fork (sponsored by Embarcadero) of Bloodshed Dev-C++ and Orwell Dev-C++. It is a full-featured Integrated Development Environment (IDE) and code editor for the C/C++ programming language. It uses Mingw port of GCC (GNU Compiler Collection) as its compiler. Embarcadero Dev-C++ can also be used in combination with Cygwin or any other GCC based compiler. Embarcadero Dev-C++ is built using the latest version of Embarcadero Delphi. Embarcadero Dev-C++ has a low memory footprint because it is a native Windows application and does not use Electron. Optimized for parallel compilation on modern multi-core machines. GitHub Project: https://github.com/Embarcadero/Dev-Cpp/ Sponsored by Embarcadero: https://www.embarcadero.com/free-tools/dev-cpp
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    Downloads: 8,863 This Week
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  • 23
    The goal of the project is now to develop a user library called libpfm4 to help setup performance events for use with the perf_events Linux kernel interface. The development of the perfmon kernel subsystem, libpfm and pfmon has now stopped.
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    Downloads: 14,036 This Week
    Last Update:
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  • 24
    mpv player (Windows)

    mpv player (Windows)

    a free, open source, and cross-platform media player

    mpv is a free (as in freedom) media player for the command line. It supports a wide variety of media file formats, audio and video codecs, and subtitle types. Main project site: https://mpv.io/
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    Downloads: 11,016 This Week
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  • 25
    Small Device C Compiler (SDCC)

    Small Device C Compiler (SDCC)

    The Small Device C Compiler (SDCC), targeting 8-bit architectures

    SDCC is a retargettable, optimizing standard C (ANSI C89 / ISO C90, ISO C99, ISO C11 / C17, ISO C23, ISO C2y) compiler that targets a growing list of architectures: STM8, MCS-51, DS390, HC08, S08, 6502, 65C02, Z80, Z80N, Z180, Rabbit, SM83, TLCS-90, eZ80, R800, Padauk PDK14 and PDK15 microprocessors. There also is incomplete support for the Microchip PIC16 and PIC18 and the Padauk PDK13.
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    Downloads: 8,080 This Week
    Last Update:
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