Browse free open source System software and projects below. Use the toggles on the left to filter open source System software 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.

    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.
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  • 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.
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  • 1
    D-Fend Reloaded

    D-Fend Reloaded

    A graphical environment for DOSBox

    D-Fend Reloaded is a graphical environment for DOSBox. D-Fend Reloaded is a successor of the discontinued D-Fend. Both environments look alike and D-Fend Reloaded contains all features of D-Fend. Even the D-Fend config files can be used.
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    Downloads: 713 This Week
    Last Update:
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  • 2
    Denise

    Denise

    C64/Amiga emulator with shader and runAhead

    Denise is a cycle accurate and platform independant C64 / Amiga 500/1000 emulator. My motivation for this project is understanding how it works and write clean and easy readable code. RetroArch SLANG shaders are supported by Denise. Features already known from the C64 emulation, such as runAhead, savestates, drive sounds, PAL encoding, dynamic rate control, G-Sync/FreeSync, Warp, just in time polling are also available for the Amiga. Denise supports SuperCPU, Final Chesscard, REU, GeoRam, EasyFlash, EasyFlash³, Gmod2, Retro Replay, Action Replay, Final Cartridge, Light Guns/Pens, GunStick, Mouse 1351, Mouse Neos, Paddles, fast loaders such as ProfDOS, PrologicDOS, DolphinDOS, ProSpeed 1571, Turbo Trans, 1571, 1581, drag'n'drop and command line support. GIT repo: https://bitbucket.org/piciji/denise/src/master
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    Downloads: 692 This Week
    Last Update:
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  • 3
    99 Nights Script | Auto Farm, Kill Aura

    99 Nights Script | Auto Farm, Kill Aura

    99 Nights Script: Kill Aura, Auto Combat, Auto Craft, & more No Key

    99 Nights In The Forest Roblox Script Free Download No Key / FREE DIAMONDS in 99 NIGHTS IN THE FOREST 👋 Welcome Welcome to the SourceForge repository! Here you'll find a Lua cheat script for the Roblox game "99 Nights in the Forest." 99 Nights Scripts with Kill Aura No key. Auto farm in 99 nights roblox game Unlock powerful features in 99 Nights in the Forest with this keyless Roblox script – no key system, no delays! Includes Bring Item, ESP (player/item tracking), and Teleport for fast exploration and survival. Boost your gameplay with this free, undetected, and easy-to-use script. ⚠️ Is It Safe to Use Scripts in 99 Nights in the Forest? Using scripts in Roblox, including in 99 Nights in the Forest, is considered a form of cheating and may violate the Roblox Terms of Service. This scripts can help you resolve your problems in 99 nights in woods roblox game
    Downloads: 1,347 This Week
    Last Update:
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  • 4
    Yabause
    Yabause is a portable Sega Saturn emulator.
    Downloads: 57 This Week
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  • The All-in-One Commerce Platform for Businesses - Shopify Icon
    The All-in-One Commerce Platform for Businesses - Shopify

    Shopify offers plans for anyone that wants to sell products online and build an ecommerce store, small to mid-sized businesses as well as enterprise

    Shopify is a leading all-in-one commerce platform that enables businesses to start, build, and grow their online and physical stores. It offers tools to create customized websites, manage inventory, process payments, and sell across multiple channels including online, in-person, wholesale, and global markets. The platform includes integrated marketing tools, analytics, and customer engagement features to help merchants reach and retain customers. Shopify supports thousands of third-party apps and offers developer-friendly APIs for custom solutions. With world-class checkout technology, Shopify powers over 150 million high-intent shoppers worldwide. Its reliable, scalable infrastructure ensures fast performance and seamless operations at any business size.
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  • 5
    PCSX2

    PCSX2

    PlayStation 2 emulator for Windows and Linux

    PCSX2 is a PlayStation 2 emulator for Windows and Linux, started by the same team that brought you PCSX (a Sony PlayStation 1 emulator). Currently, it can emulate thousands of games at full speed
    Downloads: 78 This Week
    Last Update:
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  • 6
    jdMinecraftLauncher

    jdMinecraftLauncher

    Unofficial classic styled Minecraft Launcher

    jdMinecraftLauncher is a Minecraft launcher which Look and Feel is close to the the good old official Launcher. You need a Microsoft Account which owns Minecraft to use this Launcher This Launcher is completly fanmade and not supported by Mojang/Microsoft
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    Downloads: 106 This Week
    Last Update:
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  • 7
    Software that will keep track of your favorite internet game servers such as Quake 3 &4, Enemy Territory, Call of Duty, Counter Strike & Warsow etc. Supports filtering and country locations...
    Downloads: 12 This Week
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  • 8
    Game Launcher

    Game Launcher

    A Windows tray application that launches your games, quickly

    Game Launcher is a simple application that lives in your notification area/system tray. It maintains a list of games you choose to have on it, and allows you to launch those games from anywhere by right-clicking the icon, or pressing Windows+G on your keyboard. GL supports various methods of adding games, including: browsing for the shortcut, drag'n'drop, shell integration, and direct input of a Steam App ID. Support and bug requests for GL is handled by the GitHub project's issue tracker, so if you have any bugs, feature requests or other suggestions, please post them there!
    Downloads: 5 This Week
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  • 9
    QMC2 is a Qt based multi-platform GUI front end for MAME NOTE: A new version is hosted and developed at https://github.com/qmc2/qmc2-mame-fe
    Downloads: 6 This Week
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  • Connect every part of your business to one bank account Icon
    Connect every part of your business to one bank account

    North One is a business banking app that integrates cash flow, payments, and budgeting to turn your North One Account into one Connected Bank Account

    North One is proudly built for small businesses, startups and freelancers across America. Make payments easily, keep tabs on your money and put your finances on autopilot through smart integrations with the tools you’re already using. North One was built to make managing money easy so you can focus on running your business. No more branches. No more lines. No more paperwork. Get complete access to your North One Account from your phone or computer, wherever your business takes you. Create Envelopes for taxes, payroll, rent, and anything else automatically.
    Get started for free.
  • 10

    GWLauncher

    Launcher app for Guild Wars and Guild Wars 2

    Allows configuring launch options and configuring more than one copy of the game, allowing simultaneously launching several instances. It also has account management for the auto-login feature, so it's easy and fast accessing more than one account on the same computer without having to re-enter the login info every time you want to change accounts. Small and 100% stand-alone: it doesn't require any 3rd party software installed in the computer.
    Downloads: 4 This Week
    Last Update:
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  • 11
    Helldivers 2 Binder Free v1.1.0

    Helldivers 2 Binder Free v1.1.0

    A macro runner for HELLDIVERS™ 2

    Helldivers 2 Binder allows you to select stratagems and assign hotkeys to each. In the game, you can use these hotkeys to instantly activate your stratagems without using the arrow keys.
    Downloads: 2 This Week
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  • 12
    The Black Legacy is an MMORPG develop under linux ,but also works on Windows system,We are using OpenGL and SDL to make a 3D fantasy Sci Fi game
    Downloads: 2 This Week
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  • 13
    VeGNUli

    VeGNUli

    VenenuX's development and software contender

    VenenuX's development and software contender, based on Debian flavored with openbox, lxde and firmwares: * For support: full support to Debian 7, 8. 9.. https://gitlab.com/venenux/venenux.git * For packages see https://build.opensuse.org/project/subprojects/home:vegnuli * Older Debians can Debian 4, 5, 6 in limited ways see https://gitlab.com/venenux/venenux.git * For old packages see https://build.opensuse.org/project/subprojects/home:venenux * Complete Debian 4, 5, 6 repository see google groups venenuxsarisari
    Downloads: 1 This Week
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  • 14
    Gelide

    Gelide

    Gelide, a configurable frontend for desktops.

    Gelide is a configurable frontend which let you manage any kind of emulated system (arcade, console, PC, etc) letting you to catalog and launch any game from any existing emulator under GNU/Linux.
    Downloads: 1 This Week
    Last Update:
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  • 15
    Appleverse Wizard

    Appleverse Wizard

    Windows Games Installation with Wineskin Supporter

    This program teaches you how to install some Windows games on Mac using Wineskin, and makes somethings easier, like put a company name, choose an icon or create a drive_d. It gives you some YouTube tutorials links too. The Appleverse new edition was released, Gamma Studio: http://gammastudio.sourceforge.net/
    Downloads: 0 This Week
    Last Update:
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  • 16
    Aurox is the most popular European distribution based on Fedora. It's a fast and stable operating system that focuses on better hardware support. The graphical configuration tools and installer help new users to get started with linux distributions.
    Downloads: 0 This Week
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  • 17
    AutoTeach

    AutoTeach

    AutoTeach makes kids study and learn in exchange for internet access.

    AutoTeach is a tool that enables parents to supplement The AutoTeach Parent Tool enables parents to supplement their childrens' education without supervision or drama. With AutoTeach you can queue-up activities and tasks that will be dutifully performed at regular intervals. Why will they cooperate like this? Because AutoTeach meters their internet access by using credits which they earn by performing the agenda which you have queued-up for them. The system has potential for many subjects. Everyone, worldwide, is invited to participate. Everything is open-licensed, either Creative Commons or GPL.
    Downloads: 0 This Week
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  • 18
    Bright Game Panel

    Bright Game Panel

    An easy to use and powerful game control panel

    Bright Game Panel is an open source game server control panel. "BGP" utilizes many standard technologies available on many shared hosting platforms which gives all communities the ability to remotely control their game servers.
    Downloads: 0 This Week
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  • 19
    Español: Un conjunto de proyectos realizados por la comunidad CaosG. Desde juegos de navegador hasta aplicaciones. English: A set of projects undertaken by the community CaosG. Since browser games to applications.
    Downloads: 0 This Week
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  • 20
    This program act as a TCPIP server that broadcasts messages received, via RS232, from a DS-300 race counter (from Electronic Racing Products) to any TCPIP client connected to it.
    Downloads: 0 This Week
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  • 21
    Management of the FiberParty assistants. It controls who enters and who exit from the lan-party. It store the name, number, photo, and a bar-code of the user.
    Downloads: 0 This Week
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  • 22
    GSnes9x is a GNOME front-end for the Snes9X SNES emulator. It allows setting and preservation of options for each ROM, and keeps a Cheat Codes database, an unlimited amount of codes can be stored.
    Downloads: 0 This Week
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  • 23
    Huntcraft Launcher

    Huntcraft Launcher

    Launcher oficial de Huntcraft world

    Este es el launcher oficial creado por Raiderpoer y distribuido a Huntcraft.
    Downloads: 0 This Week
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  • 24
    GenEX automatically generates the SIOC program code for various home built cockpits that use IOCards as their hardware interface system. With GenEx, cockpit builders need not worry about SIOC programming and Project Magenta/FSUIPC offsets anymore.
    Downloads: 0 This Week
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  • 25
    J2MEFS is an API for the J2ME that extends the RMS. It lets you save persistent data in your MIDlets without even knowing what a RecordStore is. You can create a structure of directories and access files through names and paths (MIDP 1.0 and above).
    Downloads: 0 This Week
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