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

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  • 1
    BRL-CAD

    BRL-CAD

    Open Source Solid Modeling CAD

    BRL-CAD is a powerful cross-platform constructive solid geometry solid modeling system that includes an interactive geometry editor, ray-tracing for rendering & geometric analyses, network distributed framebuffer support, image & signal-processing tools.
    Downloads: 121 This Week
    Last Update:
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  • 2
    Interlocking system for modular model railroading. The goal is the development of hard- and software for an model interlocking interfacing on the one hand to the model railroad and on the other to the model of the userinterface of an real interlocking.
    Leader badge
    Downloads: 151 This Week
    Last Update:
    See Project
  • 3
    OpenSAF
    Open Source High Availability Middleware Generally Based on SA Forum Specifications
    Downloads: 22 This Week
    Last Update:
    See Project
  • 4
    xinco - Document Management System, DMS
    xinco [eXtensibe INformation COre] is a powerful Web-Service based Information and Document Management System (DMS) for files, text, URLs and contacts, featuring ACLs, versioning, full text search, an FTP-like client (easy install, J2EE+MySQL/PostgreSQL)
    Downloads: 3 This Week
    Last Update:
    See Project
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    Gemini 3 and 200+ AI Models on One Platform

    Access Google's best plus Claude, Llama, and Gemma. Fine-tune and deploy from one console.

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  • 5

    MSP430-Ada

    Ada compiler support for TI MSP430 processors

    Compiler and device support for Ada programs on the ultra-low-power TI MSP430 microcontrollers. This project builds on the Gnu Gnat/GCC Ada compiler, the Sourceforge mspgcc back-end and MSP430 CPU support. It was inspired by the Sourceforge AVR-Ada project.
    Downloads: 6 This Week
    Last Update:
    See Project
  • 6
    Dreamos is an operating system developed on Sega Dreamcast to be ported to an array of embedded devices. The goal of the project is to be able to run non-ported Unix programs on the Sega Dreamcast and other embedded devices with ease and POSIX compliance
    Downloads: 9 This Week
    Last Update:
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  • 7
    NTK Ultra-Compression

    NTK Ultra-Compression

    Logiciel de compression de fichiers maximal indépendant du temps.

    Le logiciel NTK Ultra-Compression répond à une problématique essentielle de l’ère numérique : comment réduire la taille des données à leur minimum absolu sans compromis sur leur intégrité, tout en s’affranchissant des contraintes temporelles ? Dans un monde où les volumes de données explosent et où les solutions actuelles de compression restent limitées par des compromis entre rapidité, efficacité et complexité, nous proposons une approche disruptive. Les solutions actuelles, telles que le format ZIP ou 7z, bien qu’efficaces, atteignent leurs limites en termes de taux de compression et d’efficacité pour les fichiers volumineux ou complexes. Ces outils sont souvent contraints par des compromis entre rapidité d’exécution et efficacité de stockage. Cette approche disruptive s’adresse notamment aux utilisateurs ayant besoin de manipuler des fichiers volumineux, comme les logiciels, les jeux vidéo ou les bases de données, où chaque octet économisé compte.
    Downloads: 5 This Week
    Last Update:
    See Project
  • 8
    NESRomTool is a command-line based utility for extraction and injection of Nintendo ROM data from .nes files. It currently works with program and sprite data and can preview individual sprites in the terminal window.
    Leader badge
    Downloads: 4 This Week
    Last Update:
    See Project
  • 9
    Cloudium OS

    Cloudium OS

    Written in pure ASM and Exode with cloud computing in mind.

    Cloudium OS is being written in pure ASM. It's designed for speed and ease, having cloud computing in mind. It also is secure (without requiring constant user input like Windows). But, how are we going to do this? Well every os wants/says these kind of things, so to accomplish our goals we follow these simple rules: keep it simple (that's way better then these complex interfaces etc. almost nobody wants), generalize (this makes things easier and more useful without extra complexity) and be inventive (sometimes doing it the classical way just doesn't work). Note: development peace will be temporarily lowered until February the fifth. Please check out our OS and Project site!
    Downloads: 2 This Week
    Last Update:
    See Project
  • Custom VMs From 1 to 96 vCPUs With 99.95% Uptime Icon
    Custom VMs From 1 to 96 vCPUs With 99.95% Uptime

    General-purpose, compute-optimized, or GPU/TPU-accelerated. Built to your exact specs.

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  • 10
    A pure-Java compression library suitable as a drop-in replacement to current native implementations of java.util.zip. Typical scenarios where it is useful are applets, where access to native code is not allowed. It may also be useful on platforms where it
    Leader badge
    Downloads: 3 This Week
    Last Update:
    See Project
  • 11
    Status Menus
    A easy way to manage the status menus in Mac OS X.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 12
    With this project I intend to write a really, really simple OS, just for fun and learning. I think I will never have a really usable version, as I said, that's no my objective.
    Leader badge
    Downloads: 2 This Week
    Last Update:
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  • 13
    The GK3 Tools project is a collection of tools and utilities useful for viewing and modifying the Gabriel Knight 3 data files.
    Downloads: 2 This Week
    Last Update:
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  • 14
    PHP Packager is a dynamic application for PHP developers and web developers alike. It's basically a ONE file installer program, so no messy extractions, etc, just place in the directory you want to install to and you're done!
    Downloads: 2 This Week
    Last Update:
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  • 15

    Setra

    Password protected zip file cracker.

    Setra is a cross-platform command line utility used to brute-force password protected zip file. It is written in the Python programming language.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 16
    TailBlazer is a graphical version of the UNIX 'tail' utility. It allows you to monitor log files as they are written. New lines appear as they are written. TailBlazer takes this a step further by supporting pattern matching, filtering, and notification
    Downloads: 2 This Week
    Last Update:
    See Project
  • 17
    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.
    Leader badge
    Downloads: 2 This Week
    Last Update:
    See Project
  • 18
    This is an opensource project for the calculation of the mathematical constant Pi. If you are a mathematician or programer please contribute ideas or code for this project. Non professionals are also welcome to contribute.
    Downloads: 1 This Week
    Last Update:
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  • 19
    An operating system kernel being developed in Free Pascal with the goal of creating a system based on process interoperation.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 20
    Emulator for an obscure french 80ties computer : exelvision exl100. In this first stage, the project is a derivative work from MESS unfinished driver (may change in the future).
    Downloads: 1 This Week
    Last Update:
    See Project
  • 21
    Thanks to carefully thought out architecture an emulator for all hardware (i386 i860 sparc hppa SGI Mips Alpha etc) on any hardware. A lot of new theories have gone into this trying to fix old problems.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 22
    xfer9860 works with the fx-9860G (AKA Graph85) versions of Casio's graphing calculators. It allows you to transfer files to your calculator, and works on platforms where libusb is available - including Linux and Windows.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 23
    File renaming utility for complex rename operations affecting multiple files up to whole directory trees. Runs on Unixes and Windows and maybe also elsewhere. Works by applying arbitrary regular expressions on filenames. Requires Perl.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 24
    FirmMod will be a binary editor oriented to firmware modification and analisys, that will support data mappings of binary files, read/write of motorola s-record files, raw hex editing, etc. (whislists welcome!)
    Downloads: 1 This Week
    Last Update:
    See Project
  • 25
    The original FreeMMG was an attempt at implementing a decentralized MMOG in Java. FreeMMG 2 is, currently, just a PhD thesis, which you can download here. If you are interested in developing the FreeMMG 2 ideas into something concrete: fcecin AT gmail.
    Downloads: 1 This Week
    Last Update:
    See Project
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