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

  • Simple, Secure Domain Registration Icon
    Simple, Secure Domain Registration

    Get your domain at wholesale price. Cloudflare offers simple, secure registration with no markups, plus free DNS, CDN, and SSL integration.

    Register or renew your domain and pay only what we pay. No markups, hidden fees, or surprise add-ons. Choose from over 400 TLDs (.com, .ai, .dev). Every domain is integrated with Cloudflare's industry-leading DNS, CDN, and free SSL to make your site faster and more secure. Simple, secure, at-cost domain registration.
    Sign up for free
  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    The database for AI-powered applications.

    MongoDB Atlas is the developer-friendly database used to build, scale, and run gen AI and LLM-powered apps—without needing a separate vector database. Atlas offers built-in vector search, global availability across 115+ regions, and flexible document modeling. Start building AI apps faster, all in one place.
    Start Free
  • 1
    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: 17,658 This Week
    Last Update:
    See Project
  • 2
    CRC RevEng

    CRC RevEng

    Arbitrary-precision CRC calculator and algorithm finder

    CRC RevEng is a portable, arbitrary-precision CRC calculator and algorithm finder. It calculates CRCs using any of the 113 preset algorithms, or a user-specified algorithm to any width. It calculates reversed CRCs to give the bit pattern that produces a desired forward CRC. CRC RevEng also reverse-engineers any CRC algorithm from sufficient correctly formatted message-CRC pairs and optional known parameters. It comprises powerful input interpretation options. Compliant with Ross Williams' Rocksoft(tm) model of parametrised CRC algorithms.
    Leader badge
    Downloads: 110 This Week
    Last Update:
    See Project
  • 3
    EN: Code created to show how is done the calculation of a CRC. It includes many different CRCs to choose from. This software was created to help people understand how is the CRC calculated and be able to see it in a practical way, it is also available to copy and use it for your own project. I hope it helps you. ES: Código creado para mostrar como se realiza el cálculo de un CRC. Con el mismo se incluyen varios CRCs que pueden ser escogidos. Este software se creó con el propósito de ayudar a la gente a entender como se hace el cálculo de un CRC de una manera más práctica y sencilla, también se puede copiar y aprovecharlo para otras aplicaciones. Espero que te sea util.
    Leader badge
    Downloads: 17 This Week
    Last Update:
    See Project
  • 4
    CloudI: A Cloud at the lowest level
    CloudI is an open-source private cloud computing framework for efficient, secure, and internal data processing. CloudI provides scaling for previously unscalable source code with efficient fault-tolerant execution of ATS, C/C++, Erlang/Elixir, Go, Haskell, Java, JavaScript/node.js, OCaml, Perl, PHP, Python, Ruby, or Rust services. The bare essentials for efficient fault-tolerant processing on a cloud!
    Downloads: 10 This Week
    Last Update:
    See Project
  • Level Up Your Cyber Defense with External Threat Management Icon
    Level Up Your Cyber Defense with External Threat Management

    See every risk before it hits. From exposed data to dark web chatter. All in one unified view.

    Move beyond alerts. Gain full visibility, context, and control over your external attack surface to stay ahead of every threat.
    Try for Free
  • 5
    With this application you will know, instantly the time difference between two dates in the form of date, days, hours, minutes, and seconds!
    Downloads: 4 This Week
    Last Update:
    See Project
  • 6
    Numerical Systems Calculator

    Numerical Systems Calculator

    An arithmetic calculator for the most popular numerical systems.

    Have you ever imagined not having to do math to convert the various number systems and still make arithmetic calculations with different numerical systems in the same expression? That's what makes this application. You can mix decimal, binary, octal and hexadecimal arithmetic operations using the symbols "+, -, *, /,^,". You can put "e" to use Napier's constant, put "pi" to use pi constant and put a "!" in the of numerical system form to factorization. So let's start doing the math in an instant with this application and save the rest of the time for more useful things of interest.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 7
    PK7
    Utility to validate, extract, show and create digital documents included in files with "pk7" and "fp7" extensions such as electronic bills provided by some phone companies in Spain like Movistar and Telefonica.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 8
    This site hosts the source code for C++ version of the Broker for SBW, NOM module, advanced simulation suite, analysis applications and model editors.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 9
    Easiest Calendar Creator

    Easiest Calendar Creator

    Displays any calendar starting with 1760... at no cost!

    This application can create any year calendar after the year 1759. Special feature: => Calendar creation in mass.
    Downloads: 1 This Week
    Last Update:
    See Project
  • Pioneering Intelligent GxP Manufacturing Icon
    Pioneering Intelligent GxP Manufacturing

    Life sciences manufacturers that need a GxP compliant solution to aggregate manufacturing data, contextualize it, and optimize their processes.

    Pharma manufacturers enhance yield, reduce deviations and ensure product quality in GMP environments with our proven and practical AI-powered solutions. Transform your operations regardless of your digital maturity and journey with:
    Learn More
  • 10
    Tpl makes it easy to serialize your C data using just a handful of API functions. The data is stored in its native binary form for maximum efficiency. C, Perl and XML supported. Data is portable across CPU types and OS's from Unix to Mac to Windows.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 11
    A C++ library for clipping polygons.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    Current Time Designator

    Current Time Designator

    Displays all time information... at no cost!

    With this application you can know all, about current time! Day, month, year, Week day, clock (hours, minutes and seconds), time of execution of application (years, months, weeks, days, hours, minutes and seconds). -> This application has a miniscule consumption of resources. -> This application doesn't need any configuration just need to be executed.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    This projects hosts the worlds fastest algorithms for the labeling of point-features. It especially looks for algorithms thar are free of constraints, applicable to many scenarios (e.g., visualization, maps...) and do not need any preprocessing.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    The project will be looking at data (the intention is to begin looking at customer name/address data but this may widen over time) and ways to intelligently detect duplicates using fuzzy matching methods and algorithms.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15

    Primes

    Calculate primes by using extremely fast sorting

    This project considers the problem of calculating primes as a sorting problem. It includes the most efficient tree-based sorting algorithm that is possible and shows that finding a new prime can be done by sorting the differences between the previous primes in the right way. Unfortunately it has turned out that going this way is even more slowly than trying to find primes by brute force. So it can only be used as a test with heavy load for the sorting algorithm, which can be used for sorting any kind of data. And as already mentioned, it's just the most efficient tree-based sorting algorithm that you can get. But furthermore this way of finding primes interestingly leaves a hard nut to crack for mathematicians: In very rare cases it finds numbers that are not primes. For all primes below one million this phenomenon arises in exactly two cases: 31213 which is 7 * 7 * 7 * 7 * 13 336141 which is 3 * 3 * 13 * 13 * 13 * 17 Who can explain, why?
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    Schedule Tool is a utility for predicting the duration of projects from a series estimated task times. This tool converts the estimates to probabilities of success, and convolves successive tasks to give an estimated date of completion.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    A Fast MAC based 3D Free surface fuid solver. Capable also of simulating viscoelastic fluids.Includes also wave equation solver for simulating shallow water phenomena.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18

    TA-Lib.git: Technical Analysis Library

    Mirror of the TA-Lib project using a Git repository

    This project is intended to provide Git access to the code of the original project, TA-Lib, which uses Subversion. It is intended for system integrators wishing to use TA-Lib in their Git-managed project through Git submodules or subtrees. No actual development is being done here; all development happens in the original project.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    It software decodes EAN-13 bar code picture by image processing. And a GUI is ship together with it, which can take picture from web camera. So the only thing you need to recognise barcode apart you computer is a webcam.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    breve is a free, open-source 3D multi-agent simulation package designed for simulating decentralized systems and artificial life.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • Next
Want the latest updates on software, tech news, and AI?
Get latest updates about software, tech news, and AI from SourceForge directly in your inbox once a month.