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

  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    The database for AI-powered applications.

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  • The Easy Way To Build A Referral Program Icon
    The Easy Way To Build A Referral Program

    Referral Factory is the #1 referral software used by SMEs and Marketers.

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  • 1
    RSAREF

    RSAREF

    RSAREF(TM): A Cryptographic Toolkit

    This is the ancient and highly depreciated RSA refrence code.
    Downloads: 7 This Week
    Last Update:
    See Project
  • 2
    mingw-w64-dlls

    mingw-w64-dlls

    DLLs for programs built with MinGW-w64

    This package contains DLLs needed by programs built with MinGW-w64.
    Downloads: 7 This Week
    Last Update:
    See Project
  • 3

    .Net Native Interface Library

    The best library to work with .Net Assemblies in any programming lang.

    The .Net Native Interface Library (DotNetNativeInterface) is a native programming interface which provides a way for programming languages such as C, C++, Fortran, Assembly, Pascal, Java, VB etc to interact with applications and libraries written in any of the .Net languages (such as C#, VB.Net etc). Programmers can use DotNetNativeInterface native methods to access .Net 3rd party libraries or .Net Framework Libraries without the need for registry entries, COM registrations or changes to the .Net libraries. The following examples illustrate when you need to use DotNetNativeInterface native methods: 1. You want to access and use .Net Framework Class Library in your application. 2. You want to access and use 3rd party .Net Libraries in your application. Competitive Advantages: 1. Access to .Net Framework Class Library. 2. No COM registration of .Net Libraries is required when deployed. 3. Allows any programming language to consume .Net libraries as if they were native code.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 4

    SERiaM

    Unified desktop and embedded Serial port API

    A simple API, written in C, for accessing the Serial ports in a consistent way across Multiple desktop and embedded platforms. This has allowed programs for embedded devices to be mainly developed on the desktop, where test and debug is much easier. It can also be used to write serial port programs that are portable across different desktop platforms.
    Downloads: 1 This Week
    Last Update:
    See Project
  • The Cloud Sales Acceleration Platform Icon
    The Cloud Sales Acceleration Platform

    For businesses wanting a platform to list, manage, and co-sell on cloud marketplaces with minimal engineering effort

    Streamline and automate your cloud sales cycle, enhance operational efficiency, and capitalize on marketplace opportunities with the Clazar Cloud Sales Acceleration Platform.
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  • 5
    uLib

    uLib

    User mode C/C++ extended API library for Win32 programmers.

    uLib adds tons of utility functions to enhance and simplify Win32 development. Some of it is implemented as C++ classes, however, much of it is implemented as C functions. The purpose of the lib is to add functions "missing" in Win32, simplify tasks that are tedious in plain Win32, and generally make Your, and my, development process easier and faster. This lib has been the staple of my x86/x64 development for decades, and is now open sourced for the benefit of the community. It is actively maintained, as I keep adding new features when needed in my own projects, or fix flaws. It is licensed under the NNOSL open source license, a descendant of BSD which adds a degree of developer protection from shameless profiteering. I hope uLib will make Your life as a Windows programmer easier. The full documentation is browsable on the project web page (link below), and downloadable as .chm from the Files area. Good luck on the path. / Love
    Downloads: 1 This Week
    Last Update:
    See Project
  • 6
    The Aciqra Library Of Astronomical Calculations (Aloac) is a library of theories and formulas relating to astronomy to track planets, the sun and moon as well as conversions between coordinate systems. Formerly known as Aciv.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 7
    An Error Handler for C/C++ funtions, focused on code readability. It allows a clear control flow, adding Ignore, Retry, Jump, and Back functionality when a function returns error. It's macro based, written in C and targeting embedded systems.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 8

    EthernetWeatherStation2

    PIC based weather station

    Microhcip PIC18F based LCD weather station that uses Ethernet connection to download data from the Internet.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9

    FilterDriver

    File activities monitor and file access control, file encryption

    A.File and Folder Monitoring Monitor Windows file I/O activities in real time, track the file access and changes, monitor file and folder permission changes, audit who is writing, deleting, moving or reading files, report the user name and process name, get the user name and the ip address when the Windows file server's file is accessed by network user. B.File Access Control and Security Control Control Windows file I/O activities in real time, intercept the file system call, modify its content before or after the request goes down to the file system, allow/deny/cancel its execution based on filter rules. Protect the sensitive files, you can verify the user identity, authenticate them, authorize the file access, prevent the confidential files from being accessed, modified, renamed, deleted, or read by unauthorized users, you also hide your sensitive files to the unauthorized users, protect intellectual property from being copied.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Our xDM platform turns business users into data champions. Icon
    Our xDM platform turns business users into data champions.

    Discover the Intelligent Data Hub unique platform for Master Data Management

    It empowers organizations of any size to build trusted data applications quickly, with fast time to value using a single software platform for governance, master data, reference data, data quality, enrichment, and workflows.
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  • 10
    An implementation of LWIP under FreeRTOS for the LPC1768/9 Cortext M3 microcontroller
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    LibAndria is a library of classes, functions, and macros, primarily based on smart pointers, and organized into 'packages'. Since v3, all dependencies are internal, C++ standard, SDL, or optional.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12

    SPherical Image Library (SPI)

    Image format with Spherical coordinates

    SPherical Image Library (SPI) provide render-engines with a more uniform quality environmental maps, by using the spherical coordinates. It also contain some simple function for blur between these spherical coordinates, to create soft shadows for eg. point-lights.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    cygwin-dlls-matsp

    cygwin-dlls-matsp

    DLLs needed by programs compiled in Cygwin

    This package contains DLLs needed by programs compiled in Cygwin by me.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    kevux-tools

    kevux-tools

    Provide common tools similar to coreutils and util-linux.

    Provide common tools similar to coreutils and util-linux primarily for the Kevux systems. Simple commands like 'install' have proven to be problematic in that they might nit work well in change root environments where there is no mounted /proc filesystem. Provide simple replacements and other common tools utilizing the Featureless Linux Library. These will not be one-to-one or feature-to-feature replacements.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15

    procop

    Ferramenta de processamento de argumentos de linha de comando.

    *** MIGROU PARA A BIBLIOTECA MEZZA DO MESMO AUTOR *** Este aplicativo é uma ferramenta que processa os argumentos de linha de comando passados para um programa em C. É implementado como uma biblioteca.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16

    utahrle

    Library and tools for dealing with the RLE raster image format

    Utah Raster Toolkit is a collection of programs and C routines for dealing with raster images commonly encountered in computer graphics. Called the RLE format, it uses run length encoding to reduce storage space for most images. URT was originally developed by the University of Utah.
    Downloads: 0 This Week
    Last Update:
    See Project
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