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

  • 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.
    Learn More
  • 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
    ZSNES is a SNES/Super Famicom emulator for x86 computers. It runs on Windows, MS-DOS and Linux/FreeBSD and supports mode 7, sound, Super FX, and a lot more.
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    Downloads: 393 This Week
    Last Update:
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  • 2

    VisualBoyAdvance

    An emulator for Gameboy and GameboyAdvance systems

    An emulator for Gameboy and GameboyAdvance systems.
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    Downloads: 338 This Week
    Last Update:
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  • 3
    VBA-M

    VBA-M

    A merge of the original Visual Boy Advance forks

    The continuing development of the legendary VBA gameboy advance emulator.
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    Downloads: 185 This Week
    Last Update:
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  • 4
    Gens is a win32/unix Sega Genesis / Sega CD / Sega 32X emulator.
    Downloads: 49 This Week
    Last Update:
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  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
    Start Free
  • 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
    AdvanceMAME
    A MAME and MESS port with an advanced video support for Arcade Monitors, TVs, and PC Monitors. It also contains a bootable Linux LiveCD/USB, a frontend with animated MNG/MP3 snapshots, a rom manager, and recompression utilities for compressed files.
    Downloads: 29 This Week
    Last Update:
    See Project
  • 7
    Nesoid

    Nesoid

    NES emulator for Android phones

    This project is based on sources, published by original Nesoid developer, who in turn used code of GPFCE, forked from FCEUltra, currently incarnation of which is known as FCEUX. Help and suggestions are welcome. This project has been abandoned in favor of the RetroArch, another awesome free software emulator (which has much better NES support and is more actively developed): http://www.libretro.com/.
    Downloads: 21 This Week
    Last Update:
    See Project
  • 8
    Cxbx is an Xbox emulator for WinNT (XP/2k/2003) computers. Turok Evolution is currently the only playable retail game.
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    Downloads: 20 This Week
    Last Update:
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  • 9
    FakeNES GT
    FakeNES is a highly portable, Open Source NES and Famicom emulator. It runs on all modern operating systems and has an actively maintained DOS port for enthusiasts. Support for phones and other mobile platforms is under development. The majority of the project is entirely original code released under the zlib/libpng license. Contributed and third-party code is included under GNU licenses.
    Downloads: 22 This Week
    Last Update:
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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
    GameBoid

    GameBoid

    Gameboy Advance emulator for Android phones

    This project is based on sources published by original GameBoid developer, who in turn used code of gpSP2X, based on gpSP. Help and suggestions are welcome. This project is abandoned in favor of RetroArch: http://www.libretro.com/. Seriously, check that one out!
    Downloads: 26 This Week
    Last Update:
    See Project
  • 11
    Mednafen

    Mednafen

    Multi-System Emulator

    Mednafen is a portable, utilizing OpenGL and SDL, argument(command-line)-driven multi-system emulator.
    Downloads: 22 This Week
    Last Update:
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  • 12
    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: 14 This Week
    Last Update:
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  • 13
    TempleOS

    TempleOS

    64-BIt Operating System with Compiler

    TempleOS is a 64-bit kernel with compiler, graphics library and tools. It is not a Unix. It was made from scratch.
    Downloads: 8 This Week
    Last Update:
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  • 14
    Game Launcher is a cross platform, universal front end for emulators. The main goal is to provide a user interface that is easy to use and attractive, yet does not look like a traditional user interface. It should work with any emulator.
    Downloads: 6 This Week
    Last Update:
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  • 15
    ExecROM is a program that allow you to execute ROM files on a real MSX (from MSX1 up to MSX Turbo-R). XPCtools is a set of tools written in C, to create and maintain XPC patch files on a modern desktop (Mac, Windows, Linux, etc).
    Downloads: 4 This Week
    Last Update:
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  • 16
    The FreeDO project has MOVED to http://www.freedo.org, and is close to beta. An alpha is currently being internally tested. The project is no longer open-source. Please direct your browsers to http://www.freedo.org for the latest updates.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 17
    GBCoid

    GBCoid

    Gameboy and Gameboy Color emulator for Android phones

    This project is based on sources published by original GBCoid developer, who in turn used code of gnuboy. Help and suggestions are welcome. This project has been abandoned in favor of RetroArch, another awesome free software console emulator (which is also actively developed): http://www.libretro.com/.
    Leader badge
    Downloads: 2 This Week
    Last Update:
    See Project
  • 18
    A neogeo emulator for linux. Gngeo is portable and run successfully on many posix system. It use the libSDL for video/input and sound handling.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 19
    MacFCEU

    MacFCEU

    NES/Famicom emulator based on FCE Ultra.

    An updated Mac OS Classic/Carbon-specific port of FCE Ultra 0.98.13, the Nintendo Entertainment System/FamilyComputer emulator, and beyond.  This emulator is meant for older Macs, pre-OS X.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 20
    Client patcher is designed for patching kRO or Sakray data files. However it is not limited by only patching kRO or Sakray clients. With a few modifications you can make this patcher program for your own private server.
    Downloads: 2 This Week
    Last Update:
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  • 21
    FreeWPC is a software framework for writing new software for 1990's Bally/Williams pinball machines. The framework allows you to build your own ROM images, define your own game rules, incorporate dot matrix animations, design lamp shows, and so on.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 22
    Open-Apple is an Apple II emulator for Linux that currently features full emulation of an enhanced Apple IIe computer with several useful peripheral cards including clock, mouse, memory expansion, and hard drive.
    Downloads: 2 This Week
    Last Update:
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  • 23
    Apple Game Server 3.1

    Apple Game Server 3.1

    Upload games to legacy apple // computers via serial and no floppies!

    This java (version 6 or higher) program allows you to send games directly to an old apple // computer with no need for floppies, only a serial cable. No hardware modification is necessary, you only need a working serial connection. A cousin of this project can be found here: http://asciiexpress.net/gameserver/ (Thanks Egan!)
    Downloads: 1 This Week
    Last Update:
    See Project
  • 24
    DRAKE is a true homebrew game console that consists of specially crafted hardware, system software and games.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 25
    Mario is a Nintendo® GameBoy emulator for PalmOS, Java, Java Micro Edition (J2ME), Microsoft Windows, Mac OS X, Linux, and POSIX platforms.
    Downloads: 1 This Week
    Last Update:
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