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

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  • 1
    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: 3 This Week
    Last Update:
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  • 2
    Rifidi is a middleware and development platform for RFID. With Rifidi you can prototype an RFID application down to the core RFID Hardware and using Rifidi Edge you can easily develop business rules to turn RFID events into real business applications.
    Downloads: 3 This Week
    Last Update:
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  • 3
    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: 3 This Week
    Last Update:
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  • 4
    Cambridge Z88

    Cambridge Z88

    Software development for 4Mb portable, using Z80 CPU and AA batteries

    This project is for the portable computer "Cambridge Z88", produced by Sir Clive Sinclair (of ZX Spectrum fame). We continue to support software development (ROM, 3rd party apps on memory cards and desktop applications). We have moved to https://cambridgez88.jira.com/wiki (development, source code and documentation). However, we continue to publish files for download here.
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    Downloads: 8 This Week
    Last Update:
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  • 5
    JavaGear is a Sega Master System and Game Gear Emulator for Java. JavaGear runs as either an applet, embedded in a web page, or as a stand-alone application.
    Downloads: 7 This Week
    Last Update:
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  • 6
    BT-Sim is a BlueTooth simulator on a HCI level. The project alows to develop and test BT applications without using real BT hardware. It works in particular with PalmSource's Palm OS Simulator.
    Downloads: 6 This Week
    Last Update:
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  • 7

    JavaQemu

    JavaQemu was my GUI Front End project for QEMU, written in Java.

    JavaQemu is a graphical frontend for QEMU, developed in Java. It was designed to simplify the use of QEMU on Windows systems, providing a user-friendly interface on top of the command-line tool. ## Status This project is currently **archived** and no longer under active development. ## Compatibility JavaQemu was originally built for: * Java Runtime Environment (JRE) 1.7 / 1.8 and newer * Microsoft Windows ## Future Direction A new version of this concept may be developed in the future, using more modern technologies and improved architecture. ## Notes This repository remains available for reference and historical purposes. Thank you for your interest. ## Help shape the future of JavaQEMU! If you'd like to see a new generation of JavaQEMU, please vote in the Patreon poll and let me know which features or priorities matter most to you. Patreon poll: https://www.patreon.com/DanielBruno/posts/which-project-to-160290802
    Downloads: 6 This Week
    Last Update:
    See Project
  • 8
    Compukit UK101 Simulation
    A simulation of a 1979 Compukit UK101 Personal Computer.
    Downloads: 2 This Week
    Last Update:
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  • 9
    JPC
    The fast x86 PC emulator in 100% pure Java
    Downloads: 3 This Week
    Last Update:
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  • 10
    A simple but effective romrenamer written in Java. Runs on Linux and Windows and comes with a bundled installer. Reads NDS, RAR and Zipfiles Can extract directly to NDS or Zipfile. Datasource is provided as XMLFile from http://www.advanscene.com/
    Downloads: 3 This Week
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  • 11
    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: 4 This Week
    Last Update:
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  • 12
    The purpose of the cinc project is to develop an emulator for Bell Labs' Cardiac (cardboard illustrative aid to computation) computer. The main product from this project is a Java program called jcinc.
    Downloads: 4 This Week
    Last Update:
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  • 13
    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: 2 This Week
    Last Update:
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  • 14
    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: 3 This Week
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  • 15
    WeirdX is a pure Java X Window System server.
    Downloads: 3 This Week
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  • 16
    GameBoy emulator (not GameBoy Color) for J2ME based on Mario GameBoy (TM) Emulator 0.2.4 by Carlos Hasan with good speed enhancements and many useful options. GPLv2 license.
    Downloads: 1 This Week
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  • 17

    JsDOSBox

    JavaScript PC DOS Emulator

    JsDOSBox is a JavaScript port of jDosbox (https://sourceforge.net/projects/jdosbox/) which is itself a port of DOSBox (http://www.sourceforge.net/projects/dosbox). Demonstration of JsDOSBox at http://jsdosbox.sourceforge.net Running a game demo at http://jsdosbox.appspot.com (Chrome recommended). And running DOS demos at http://retropcdemos.appspot.com. See website link below for details on recent changes and instructions. http://sourceforge.net/p/jsdosbox/home/Home/
    Downloads: 1 This Week
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  • 18
    Alchemy OS

    Alchemy OS

    Development and distribution platform for mobile phones

    Alchemy OS is a software development and distribution platform for mobile phones with Java support. Although this is not an operating system in the full sense, it provides rich platform to develop, compile and run applications directly in the phone, as well as install already written applications.
    Downloads: 2 This Week
    Last Update:
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  • 19
    Castadiva
    Castadiva is a test bed based on low-cost off-the-shelf devices, which is used to test protocols developed for MANETs. Castadiva is completely compatible with the file format used by the ns-2 simulator.
    Downloads: 2 This Week
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  • 20
    Java Runtime Environment (JRE) 1.4.1 implementation for the Amiga Platform (OS 3.9 & 4.0)
    Downloads: 2 This Week
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  • 21
    Mario is a Nintendo® GameBoy emulator for PalmOS, Java, Java Micro Edition (J2ME), Microsoft Windows, Mac OS X, Linux, and POSIX platforms.
    Downloads: 2 This Week
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  • 22
    ZX Spectrum 48K/128K emulator Java applet
    Downloads: 2 This Week
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  • 23
    Dioscuri is an x86 computer hardware emulator written in Java. It is designed by the digital preservation community to make sure that documents and programs from the past can still be accessed in the future. Dioscuri is durable and component-based.
    Downloads: 1 This Week
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  • 24
    GNUDE is a complete suite of GNU C, C++, Fortran, and Java Cross Compilers, and the GDB CPU Simulator and Debugger for embedded microprocessor applications development. Targets development for ARM7, ARM9, and XScale applications.
    Downloads: 1 This Week
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  • 25
    JBit
    JBit is small java application for mobile phones (MIDlet) that gives you a programmable 8-bit microcomputer. With JBit, you can edit, save, run and debug assembly (6502) programs directly on your phone.
    Downloads: 1 This Week
    Last Update:
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