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.

  • All-in-One Payroll and HR Platform Icon
    All-in-One Payroll and HR Platform

    For small and mid-sized businesses that need a comprehensive payroll and HR solution with personalized support

    We design our technology to make workforce management easier. APS offers core HR, payroll, benefits administration, attendance, recruiting, employee onboarding, and more.
  • Optimize your workforce. Icon
    Optimize your workforce.

    Avilar serves clients in the private, government and non-profit sectors, with 50 to 250,00 learners and administrative users.

    To win in today’s business environment, you need the right people, with the right skills, in the right jobs, at the right time. Avilar, the Competency Company, helps astute organizations optimize their workforce for success. Avilar’s competency and eLearning tools provide flexible workforce analytics solutions that work.
  • 1
    net-snmp
    Net-SNMP provides tools and libraries relating to the Simple Network Management Protocol including: An extensible agent, an SNMP library, tools to request or set information from SNMP agents, tools to generate and handle SNMP traps, etc.
    Leader badge
    Downloads: 18,046 This Week
    Last Update:
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  • 2
    Barrier

    Barrier

    Open-source KVM software

    Barrier is a software that works just like a KVM (keyboard, video and mouse) switch, which allows you to use a single mouse and keyboard to control several different computers by physically turning a dial on the box to switch the machine you're controlling at any given time. Barrier is able to do this in software, giving you control over different machines by simply moving your mouse to the edge of the screen, or by using a keypress to switch focus to a different system. Barrier was built to be simple and reliable, allowing you to control a different machine by simply using your mouse and keyboard from another. It works on all major operating systems (Linux, Windows, MacOS/OS X), including FreeBSD and OpenBSD.
    Downloads: 816 This Week
    Last Update:
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  • 3
    mpv player (Windows)

    mpv player (Windows)

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

    Main project site: https://mpv.io/
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    Downloads: 22,993 This Week
    Last Update:
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  • 4
    LIBPNG: PNG reference library
    Reference library for supporting the Portable Network Graphics (PNG) format.
    Leader badge
    Downloads: 102,805 This Week
    Last Update:
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  • Innovate faster with enterprise-ready generative AI—enhanced by Gemini Icon
    Innovate faster with enterprise-ready generative AI—enhanced by Gemini

    Build, deploy, and scale machine learning (ML) models faster, with fully managed ML tools for any use case.

    Vertex AI offers everything you need to build and use generative AI—from AI solutions, to Search and Conversation, to 130+ foundation models, to a unified AI platform.
  • 5

    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.
    Leader badge
    Downloads: 17,714 This Week
    Last Update:
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  • 6
    Asuswrt-Merlin

    Asuswrt-Merlin

    Alternative firmware for Asus wireless routers

    Asuswrt-Merlin is a third party firmware for select Asus wireless routers. Based on the Asuswrt firmware developed by Asus, it brings tweaks, new features and other improvements to the original firmware, while retaining its performance and ease of use. Note that only downloads are hosted on SF.net - the complete source code can be found on https://github.com/RMerl/asuswrt-merlin (legacy 380.xx) and https://github.com/RMerl/asuswrt-merlin.ng (382 and newer releases).
    Leader badge
    Downloads: 16,248 This Week
    Last Update:
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  • 7
    ImmortalWrt

    ImmortalWrt

    An opensource OpenWrt variant for mainland China users.

    ImmortalWrt is a fork of OpenWrt, with more packages ported, more devices supported, better performance, and special optimizations for mainland China users. Compared the official one, we allow to use hacks or non-upstreamable patches / modifications to achieve our purpose. Source from anywhere. Default login address: http://192.168.1.1 or http://immortalwrt.lan, username: root, password: none.
    Leader badge
    Downloads: 88,539 This Week
    Last Update:
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  • 8
    MultiThreaded TFTP Server Open Source Freeware Windows/Unix for PXEBOOT, firmware load, support tsize, blksize, timeout Server Port Ranges, Block Number Rollover for Large Files. Runs as Service/daemon. Single Port version also available. Download
    Leader badge
    Downloads: 16,215 This Week
    Last Update:
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  • 9
    Zero Install
    Zero Install is a decentralised cross-distribution software installation system. Create one package that works everywhere! With dependency handling and automatic updates, full support for shared libraries, and integration with native package managers
    Leader badge
    Downloads: 13,670 This Week
    Last Update:
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  • Simply Smarter SaaS Backup for Microsoft, Google and Salesforce. Icon
    Simply Smarter SaaS Backup for Microsoft, Google and Salesforce.

    Spanning proactively defends mission-critical data with automated backup that is secure, affordable and insanely easy to use.

    Comprehensive data protection. Simple recovery. Built in trust and transparency. See for yourself why Spanning is the leading cloud-to-cloud backup solution.
  • 10
    Tools and patches for the Linux Diskquota system as part of the Linux kernel
    Leader badge
    Downloads: 16,656 This Week
    Last Update:
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  • 11
    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
    Leader badge
    Downloads: 13,853 This Week
    Last Update:
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  • 12
    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
    Leader badge
    Downloads: 68,081 This Week
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  • 13
    Doxygen
    Doxygen is a JavaDoc like documentation system for C++, C, Java and IDL.
    Leader badge
    Downloads: 9,987 This Week
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  • 14
    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.
    Leader badge
    Downloads: 11,804 This Week
    Last Update:
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  • 15

    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.
    Leader badge
    Downloads: 17,978 This Week
    Last Update:
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  • 16
    WSJT

    WSJT

    Weak signal ham radio communication

    The WSJT project implements software for amateur radio communication using state-of-the-art digital techniques. Typical applications involve "DXing" at LF, MF, HF, and VHF+ frequencies, including meteor scatter and EME ("moonbounce"). Major emphasis is placed on weak-signal techniques. Summary Program Descriptions: WSJT-X supports the communication protocols FST4, FT4, FT8, JT4, JT9, JT65, Q65, MSK144, WSPR, FST4W, and Echo, each optimized for different sorts of radio-wave propagation. MAP65 is designed for EME an VHF and higher frequencies. It provides a panoramic, polarization-matching receiver for the Q65 and JT65. modes. Programs WSJT and WSPR are interesting primarily for historical reasons. They are superseded by WSJT-X.
    Leader badge
    Downloads: 8,445 This Week
    Last Update:
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  • 17
    MPC-BE

    MPC-BE

    Media Player Classic - BE

    Media Player Classic - BE is a free and open source audio and video player for Windows. Media Player Classic - BE is based on the original "Media Player Classic" project (Gabest) and "Media Player Classic Home Cinema" project (Casimir666), contains additional features and bug fixes.
    Leader badge
    Downloads: 8,009 This Week
    Last Update:
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  • 18
    libsdl-android

    libsdl-android

    SDL library for Android, including several games.

    Port of SDL library to Android mobile platform. There are also several games inside the repository, along with their sources and build files. Both SDL 1.2 and 1.3/2.0 versions are supported (1.3/2.0 support is experimental) Sources are at https://github.com/pelya/commandergenius
    Leader badge
    Downloads: 8,397 This Week
    Last Update:
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  • 19
    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.
    Leader badge
    Downloads: 7,483 This Week
    Last Update:
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  • 20

    GeographicLib

    Geographic library

    GeographicLib is a small C++ library for: geodesic and rhumb line calculations; conversions between geographic, UTM, UPS, MGRS, geocentric, and local cartesian coordinates; gravity (e.g., EGM2008) and geomagnetic field (e.g., WMM2020) calculations.
    Leader badge
    Downloads: 8,710 This Week
    Last Update:
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  • 21
    Drivers and tools to support ATM networking under Linux. Eventually this will also include support for some types of DSL modems.
    Leader badge
    Downloads: 45,479 This Week
    Last Update:
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  • 22
    ophcrack

    ophcrack

    A Windows password cracker based on rainbow tables

    Ophcrack is a Windows password cracker based on a time-memory trade-off using rainbow tables. This is a new variant of Hellman's original trade-off, with better performance. It recovers 99.9% of alphanumeric passwords in seconds.
    Leader badge
    Downloads: 8,881 This Week
    Last Update:
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  • 23
    Project has been moved to https://github.com/marchaesen/vcxsrv Windows X-server based on the xorg git sources (like xming or cygwin's xwin), but compiled with Visual C++ 2012 Express Edition. Source code can also be compiled with VS2008, VS2008 Express Edition and VS2010 Express Edition, although current project and makefile are not fully compatible anymore. Versions starting from 1.14.3.0 are not compatible with Windows XP anymore.
    Leader badge
    Downloads: 6,937 This Week
    Last Update:
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  • 24
    Technical analysis library with indicators like ADX, MACD, RSI, Stochastic, TRIX... includes also candlestick pattern recognition. Useful for trading application developpers using either Excel, .NET, Mono, Java, Perl or C/C++.
    Leader badge
    Downloads: 9,378 This Week
    Last Update:
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  • 25
    hdparm - get/set ATA/SATA drive parameters under Linux
    Leader badge
    Downloads: 8,099 This Week
    Last Update:
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