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

  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
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  • Zenflow- The AI Workflow Engine for Software Devs Icon
    Zenflow- The AI Workflow Engine for Software Devs

    Parallel agents. Multi-agent orchestration. Specs that turn into shipped code. Zenflow automates planning, coding, testing, and verification.

    Zenflow is the AI workflow engine built for real teams. Parallel agents plan, code, test, and verify in one workflow. With spec-driven development and deep context, Zenflow turns requirements into production-ready output so teams ship faster and stay in flow.
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  • 1
    Data Crow

    Data Crow

    The ultimate cataloguer

    Data Crow allows you to use the standard movie & video (divx, xvid, DVD, Blu-ray, etc), book (and eBooks), images, board games, comic books, games & software, music (mp3 and other music files) cataloguing modules. Besides these modules, which you can change to fit your requirements, you can create new modules (want to catalogue your stamps, equipment, or anything else?). The GUI is skinnable. Reporting (using JasperReports and their community edition JasperSoft Developer Studio ), loan administration, item importing & exporting, backup & restore and many other optional features are waiting for you.
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    Downloads: 306 This Week
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  • 2
    Game Extractor

    Game Extractor

    Open and edit the archive files used in over 5200 games.

    Reads and writes archives used in many popular games. Great for mod development and game translations. Supports over 5200 games, with more games added through small plugins. Also shows file previews and converts them to different formats.
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    Downloads: 379 This Week
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  • 3
    MAME4droid

    MAME4droid

    MAME Android Emulator.

    MAME4droid (0.139u1) is developed by David Valdeita (Seleuco), port of MAME 0.139u1 emulator by Nicola Salmoria and TEAM. MAME4droid (0.139u1) emulates arcade games supported by original MAME 0.139u1. This MAME4droid version is targeted to Dual-Core devices, because it is based on a high specs 2010 PC MAME build. Anyway don't expect arcade games of the 90 to work at full speed. With some games that are really bad optimized (like outrun or mk series) you will need at least a 1.5 ghz dual-core device (Cortex A15). This is related to MAME build used, since it is targeted to high specs PC's as i said before. This version emulates over 8000 different romsets. Please, try to understand that that with that amount of games, some will run better than others and some might not even run with MAME4droid. Please, don't email me asking for a specific game to run. Official web page for news, source code & additional information: http://code.google.com/p/imame4all/
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    Downloads: 92 This Week
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  • 4
    Roblox Auto Clicker & Macro

    Roblox Auto Clicker & Macro

    Roblox but have auto clicker. Don't waste your time for click.

    Free auto clicker for Roblox. You don't need to click manually, let us do it for you. This program made by UfukGames and supporting 3 languages (Türkçe,Deutsch, English). You can use this program as an macro also. This program scanned before published.
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    Downloads: 44 This Week
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  • Grafana: The open and composable observability platform Icon
    Grafana: The open and composable observability platform

    Faster answers, predictable costs, and no lock-in built by the team helping to make observability accessible to anyone.

    Grafana is the open source analytics & monitoring solution for every database.
    Learn More
  • 5
    Neko Project II for Android

    Neko Project II for Android

    PC-98 emulator for Android phones

    This project is based on sources, published by someone with nickname sawada, who used code of Neko Project II. Help and suggestions are welcome.
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    Downloads: 40 This Week
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  • 6
    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: 14 This Week
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  • 7
    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: 32 This Week
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  • 8
    LocoNet over TCP
    Client-server based software that talks to Digitrax LocoNet. TCP server talks through a hardware interface (e.g. LocoBuffer) to LocoNet. (User interface) clients talk to that server.
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    Downloads: 30 This Week
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  • 9
    The Neverhood Restoration
    Be warned this project was discontinued in 2013 and has not been updated in years.
    Downloads: 29 This Week
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  • Free and Open Source HR Software Icon
    Free and Open Source HR Software

    OrangeHRM provides a world-class HRIS experience and offers everything you and your team need to be that HR hero you know that you are.

    Give your HR team the tools they need to streamline administrative tasks, support employees, and make informed decisions with the OrangeHRM free and open source HR software.
    Learn More
  • 10
    A Java-based Gameboy and Gameboy Color emulator for mobile devices and PCs. If you want to play Gameboy games on your mobile phone you should try this emulator. For more information see the Wiki http://sourceforge.net/apps/mediawiki/javagb/index.php.
    Downloads: 8 This Week
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  • 11
    jnostromo

    jnostromo

    E-Sport Drivers for the Razer Nostromo

    Deprecated - please use Keyboarding Master: https://sites.google.com/site/keyboardingmaster/ jnostromo provides drivers for the Razer Nostromo & Belkin N52/N52te designed to be E-Sport legal. Profiles are unique user defined keymappings and can be created for each game. Each profile can have up to 8 unique keymaps with mappings to switch between keymaps. jnostromo includes an easy to use configuration gui to map keys from the nostromo to the keyboard and/or mouse. The configuration gui can be hidden and at any time, the gui can be displayed by clicking on the system tray icon. Its the goal of this project to make jnostromo the driver of choice for E-Sports and competitive gamers! Version 1.5 Tutorial Video http://youtu.be/EkLRJiqoE_o Note, version 1.5.2 has just been released (tarball) which includes an important bug fix. Before, holding down a key repeats the key, now the application only receives a single key when a key is held down.
    Downloads: 13 This Week
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  • 12
    Alternative Lineage 2 Game Server written in Java.
    Downloads: 9 This Week
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  • 13
    Minecraft Portable

    Minecraft Portable

    Portable Minecraft launcher for macOS

    A portable Minecraft launcher for macOS. This is the legacy Java-based Minecraft launcher. Minecraft, and the Minecraft Logo are trademarks of Mojang AB. http://mojang.com/, http://minecraft.net/
    Downloads: 13 This Week
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  • 14
    JStella is a Java-based Atari 2600 VCS emulator. It allows one to play old Atari 2600 games in an operating system independent manner. It also supports web page based applets. Its emulation core is based on Stella-Atari 2600 Emulator.
    Downloads: 4 This Week
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  • 15
    LSJ-Launcher-v251215

    LSJ-Launcher-v251215

    Lucifer ate the tomcat.

    Lucifer ate the tomcat.. and embbed the more useful registry. and free software utilities.
    Downloads: 6 This Week
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  • 16
    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/.
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    Downloads: 5 This Week
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  • 17
    Horizon's Macro

    Horizon's Macro

    Don't click by yourself. Let us do it for you. 15 CPS guarantee.

    With this application you will save lots of time. It's free forever. No need to optimize like other macro applications. This program made by: UfukGames
    Downloads: 5 This Week
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  • 18
    aScanmem

    aScanmem

    game cheater for Android

    aScanmem is Android frontend for scanmem game hacking utility. Scanmem is a Linux cheating tool acting also as debugger / memory editor with support for viewing memory regions watching and repeatedly setting values in chosen address space.
    Downloads: 4 This Week
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  • 19
    MobileZX is a 48k ZX Spectrum emulator for mobile devices with support for J2ME MIDP2.0. It is oriented to devices such as PDAs and mobile phones.
    Downloads: 2 This Week
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  • 20
    Downloads: 7 This Week
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  • 21
    EmuLinker is a fully featured Kaillera network server. Kaillera is a client/server system that virtually any emulator can implement to enable network play, by mapping "Player 2" input to another user over the Internet using UDP network communication.
    Downloads: 5 This Week
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  • 22
    JMStella is a J2ME Atari 2600 VCS emulator based upon JStella 0.95. It allows one to play Atari 2600 games on a java-enabled mobile phone.
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    Downloads: 1 This Week
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  • 23
    GamePatchDistributor is designed as a convenient tool for game patch distribution on local LAN-parties. As frontend for an FTP-server or a Windows share it makes patches easily accessible over the network, without the need for a special server setup.
    Downloads: 4 This Week
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  • 24
    Minecraft (Linux)

    Minecraft (Linux)

    Minecraft launcher

    Downloads: 3 This Week
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  • 25
    Xbpad

    Xbpad

    Xbpad - Use your xbox pad as keyboard and mouse.

    With Xbpad, you can use an Xbox 360® controller to surf the web and play games and music on your PC. It's a comfortable alternative to the keyboard and mouse. Using Xbpad with a wireless controller means you don't need to sit by your computer. You can control your music player wirelessly. You can also connect your computer to your TV and browse the web wirelessly using your controller. Xbpad lets you use a comfortable controller instead of the mouse and keyboard. If you find clicking a mouse difficult, squeezing a controller trigger might be a good alternative. If you need to stay away from the keyboard, you might like to try Xbpad instead. Download: Choose between application bundled with JRE or without. Github: https://github.com/ddwreczycki/Xbpad64 https://github.com/ddwreczycki/Xbpad32 Softpedia reviews: http://www.softpedia.com/get/System/System-Miscellaneous/Xbpad.shtml
    Downloads: 3 This Week
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