C Libraries for Linux

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Browse free open source C Libraries for Linux and projects below. Use the toggles on the left to filter open source C Libraries for Linux by OS, license, language, programming language, and project status.

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  • 1
    libjpeg-turbo

    libjpeg-turbo

    SIMD-accelerated libjpeg-compatible JPEG codec library

    libjpeg-turbo is a JPEG image codec that uses SIMD instructions (MMX, SSE2, NEON, AltiVec) to accelerate baseline JPEG compression and decompression on x86, x86-64, ARM, and PowerPC systems. On such systems, libjpeg-turbo is generally 2-6x as fast as libjpeg, all else being equal. On other types of systems, libjpeg-turbo can still outperform libjpeg by a significant amount, by virtue of its highly-optimized Huffman coding routines. In many cases, the performance of libjpeg-turbo rivals that of proprietary high-speed JPEG codecs. libjpeg-turbo implements both the traditional libjpeg API as well as the less powerful but more straightforward TurboJPEG API. libjpeg-turbo also features colorspace extensions that allow it to compress from/decompress to 32-bit and big-endian pixel buffers (RGBX, XBGR, etc.), as well as a full-featured Java interface.
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    Downloads: 34,505 This Week
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  • 2
    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: 13,817 This Week
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  • 3

    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: 11,178 This Week
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  • 4
    LuaBinaries
    LuaBinaries is a distribution of the Lua libraries and executables compiled for several platforms.
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    Downloads: 6,006 This Week
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  • 5
    libusb

    libusb

    A cross-platform library that gives apps easy access to USB devices

    Library to enable user space application programs to communicate with USB devices
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    Downloads: 3,982 This Week
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  • 6
    Octave Forge

    Octave Forge

    A collection of packages providing extra functionality for GNU Octave

    Octave Forge is a central location for collaborative development of packages for GNU Octave. The Octave Forge packages expand Octave's core functionality by providing field specific features via Octave's package system. See https://octave.sourceforge.io/packages.php for a list of all available packages. GNU Octave is a high-level interpreted language, primarily intended for numerical computations. It provides capabilities for the numerical solution of linear and nonlinear problems, and for performing other numerical experiments. It also provides extensive graphics capabilities for data visualization and manipulation. Octave is normally used through its interactive command line interface, but it can also be used to write non-interactive programs. The Octave language is quite similar to Matlab so that most programs are easily portable. Refer to https://www.octave.org for more information.
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    Downloads: 2,851 This Week
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  • 7
    *NOTE* Migrated to http://github.com/cracklib/cracklib Next generation version of libCrack password checking library. As of Oct 2008 (reflected in 2.8.15 code release), licensed under LGPL.
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    Downloads: 2,465 This Week
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  • 8
    The OpenGL Extension Wrangler Library
    The OpenGL Extension Wrangler Library is a simple tool that helps C/C++ developers initialize extensions and write portable applications. GLEW currently supports a variety of operating systems, including Windows, Linux, Darwin, Irix, and Solaris.
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    Downloads: 1,994 This Week
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  • 9
    GTK+2 for Windows Runtime Environment

    GTK+2 for Windows Runtime Environment

    The files required to run GTK+ applications on Windows

    This is the GTK+2 Runtime Environment Installer for Windows. It includes all of the files required to run GTK+2 applications on Windows. Some support tools are also available. This project is no longer maintained. Please use its successor: https://github.com/tschoonj/GTK-for-Windows-Runtime-Environment-Installer
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    Downloads: 1,319 This Week
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  • 10
    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: 261 This Week
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  • 11
    OpenCorePkg

    OpenCorePkg

    OpenCore bootloader

    OpenCorePkg is an open-source, modular UEFI (Unified Extensible Firmware Interface) bootloader and development framework, primarily designed to enable macOS booting on non-Apple hardware (Hackintosh). It includes Apple-specific UEFI drivers, utilities for macOS installation support, and shared libraries used across Acidanthera projects. Apple disk image loading support. Apple keyboard input aggregation. Apple PE image signature verification. Apple UEFI secure boot supplemental code. Audio management with screen reading support. Basic ACPI and SMBIOS manipulation.
    Downloads: 210 This Week
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  • 12
    AppSync

    AppSync

    Unified AppSync dynamic library for iOS 5 and above

    AppSync is a tool that enables sideloading and installation of unsigned iOS applications. It allows developers and users to install apps without requiring a paid Apple Developer account.
    Downloads: 190 This Week
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  • 13
    OpenSSL Project

    OpenSSL Project

    TLS/SSL and crypto library

    OpenSSL is a robust, commercial-grade, full-featured Open Source Toolkit for the TLS (formerly SSL), DTLS and QUIC (currently client-side only) protocols. The protocol implementations are based on a full-strength general-purpose cryptographic library, which can also be used stand-alone. Also included is a cryptographic module validated to conform with FIPS standards. OpenSSL is descended from the SSLeay library developed by Eric A. Young and Tim J. Hudson.
    Downloads: 153 This Week
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  • 14
    QB64

    QB64

    BASIC for the modern era

    QB64 is a modern self-hosting BASIC compiler that brings classic QBasic/QuickBASIC programs into the modern era. It enables legacy code to run on today’s operating systems with minimal modifications, while also introducing new commands and libraries for multimedia, networking, and 64-bit computing. QB64 compiles to C++ and includes a built-in IDE, making it accessible for beginners, hobbyists, and retro programming enthusiasts. It aims to preserve the ease and nostalgia of BASIC while expanding its capabilities for contemporary development.
    Downloads: 151 This Week
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  • 15
    POCO

    POCO

    Cross-platform C++ libraries for building network applications

    The POCO C++ Libraries are powerful cross-platform C++ libraries for building network- and internet-based applications that run on desktop, server, mobile, IoT, and embedded systems. Whether building automation systems, industrial automation, IoT platforms, air traffic management systems, enterprise IT application and infrastructure management, security and network analytics, automotive infotainment and telematics, financial or healthcare, C++ developers have been trusting the POCO C++ Libraries for 15+ years and deployed it in millions of devices. Create software for connected embedded devices running Linux, Windows Embedded or QNX. Create cross-platform backends in C++ for iOS and Android applications and combine it with a native or HTML5-based user interface. Create software for IoT devices that talk to cloud backends over HTTP REST APIs. See macchina.io for an IoT platform built with POCO.
    Downloads: 73 This Week
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  • 16
    Extended Module Player

    Extended Module Player

    A multi-format module player and library

    libxmp is a library that renders module files to PCM data. xmp is a module player for Unix-like systems, based on libxmp, that plays over 90 mainstream and obscure module formats from Amiga, Atari, Acorn, Apple IIgs and PC, including Protracker (MOD), Scream Tracker 3 (S3M), Fast Tracker II (XM) and Impulse Tracker (IT) files.
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    Downloads: 470 This Week
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  • 17
    GtkDatabox

    GtkDatabox

    A GTK+-3 widget to display data

    GtkDatabox is a widget for live display of large amounts of fluctuating numerical data. Data presentation (e.g. on linear or logarithmic scales, as dots or lines, with markers/labels) as well as user interaction (e.g. measuring distances) is easy.
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    Downloads: 628 This Week
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  • 18
    libusb

    libusb

    A cross-platform library to access USB devices

    libusb is a library for USB device access from Linux, macOS, Windows, OpenBSD/NetBSD, Haiku and Solaris userspace. It is written in C (Haiku backend in C++) and licensed under the GNU Lesser General Public License version 2.1 or, at your option, any later version. libusb is a C library that provides generic access to USB devices. It is intended to be used by developers to facilitate the production of applications that communicate with USB hardware. Using a single cross-platform API, it provides access to USB devices on Linux, macOS, Windows, etc. No special privilege or elevation is required for the application to communicate with a device. All versions of the USB protocol, from 1.0 to 3.1 (latest), are supported. libusb is abstracted internally in such a way that it can hopefully be ported to other operating systems.
    Downloads: 65 This Week
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  • 19
    Mikmod Sound System
    Mikmod is a module player and library supporting many formats, including mod, s3m, it, and xm. Originally a player for MS-DOS, MikMod has been ported to other platforms, such as Unix, Macintosh, BeOS, and Java(!!)
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    Downloads: 943 This Week
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  • 20
    usbmuxd

    usbmuxd

    A socket daemon to multiplex connections from and to iOS devices

    A socket daemon to multiplex connections from and to iOS devices. usbmuxd stands for "USB multiplexing daemon". This daemon is in charge of multiplexing connections over USB to an iOS device. The daemon is automatically started by udev or systemd depending on what you have configured upon hotplug of an iOS device and exits if the last device was unplugged. When usbmuxd is running it provides a socket interface at /var/run/usbmuxd that is designed to be compatible with the socket interface that is provided on macOS. You should also create an usbmux user that has access to USB devices on your system. Alternatively, just pass a different username using the -U argument. usbmuxd is not used for tethering data transfers which uses a dedicated USB interface to act as a virtual network device. The higher-level layers, especially if you want to write an application to interact with the device, are handled by libimobiledevice.
    Downloads: 57 This Week
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  • 21
    Open source DKIM library, MTA filter implementation and associated tools.
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    Downloads: 278 This Week
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  • 22
    libwdi

    libwdi

    Windows Driver Installer library for USB devices

    libwdi is a cross-platform open-source C library focused on simplifying the installation of device drivers for USB hardware that otherwise does not have automatic driver support, making it especially useful for developers building installers or system management tools. The library abstracts away many of the complexities of USB device enumeration and driver deployment on Windows systems, such as creating a list of devices, preparing appropriate driver files, and invoking the operating system’s driver installation mechanics, so your software doesn’t have to re-implement these low-level tasks. It provides a clean API that includes functions to detect driverless USB devices, prepare driver packages, install drivers programmatically, and handle logging and error codes reliably. Projects integrate this library into custom installers, automated provisioning scripts, or hardware management solutions where users need seamless driver setup without manual steps.
    Downloads: 46 This Week
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  • 23
    WebP Codec

    WebP Codec

    Library to encode and decode images in WebP format

    libwebp is the reference codec library for Google’s WebP image format, providing both encoding and decoding along with command-line tools. It supplies cwebp to compress images into WebP and dwebp to decompress them back, making it easy to test quality/size trade-offs across presets and tuning parameters. The GitHub repository is a mirror; the canonical source of truth lives on Chromium’s git, and developer docs are hosted on WebP’s portal. The project underpins WebP support across browsers, imaging libraries, and many native apps thanks to its stable C API. Additional companion repos host test data and demos, including JavaScript builds and timing tests for various platforms. As a widely deployed codec, libwebp balances compression efficiency, speed, and integration simplicity across platforms.
    Downloads: 39 This Week
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  • 24
    GLFW

    GLFW

    A project that has moved to GitHub

    GLFW is an Open Source, multi-platform library for OpenGL, OpenGL ES and Vulkan development on the desktop. It provides a simple API for creating windows, contexts and surfaces, receiving input and events.
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    Downloads: 135 This Week
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  • 25
    Darknet YOLO

    Darknet YOLO

    Real-Time Object Detection for Windows and Linux

    This is YOLO-v3 and v2 for Windows and Linux. YOLO (You only look once) is a state-of-the-art, real-time object detection system of Darknet, an open source neural network framework in C. YOLO is extremely fast and accurate. It uses a single neural network to divide a full image into regions, and then predicts bounding boxes and probabilities for each region. This project is a fork of the original Darknet project.
    Downloads: 27 This Week
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