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
    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.
    Downloads: 8 This Week
    Last Update:
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  • 2
    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: 33 This Week
    Last Update:
    See Project
  • 3
    The Neverhood Restoration
    Be warned this project was discontinued in 2013 and has not been updated in years.
    Downloads: 32 This Week
    Last Update:
    See Project
  • 4
    NET-Simulator was created to help lecturers and students in the study of computer networks. Students can build virtural networks in the virtual environment provided by NET-Simulator. These devices are controlled by means of command line interface.
    Downloads: 11 This Week
    Last Update:
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  • 5
    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.
    Leader badge
    Downloads: 19 This Week
    Last Update:
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  • 6
    AppleCommander is a tool that manipulates Apple ][ disk images. Files may be imported, exported, viewed, or printed with various file filters. ** PLEASE NOTE THAT WE HAVE MOVED TO GITHUB! https://github.com/AppleCommander **
    Downloads: 6 This Week
    Last Update:
    See Project
  • 7
    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: 8 This Week
    Last Update:
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  • 8

    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: 5 This Week
    Last Update:
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  • 9
    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
    Last Update:
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  • 10
    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
    Last Update:
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  • 11
    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: 3 This Week
    Last Update:
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  • 12
    JPC
    The fast x86 PC emulator in 100% pure Java
    Downloads: 3 This Week
    Last Update:
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  • 13

    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: 5 This Week
    Last Update:
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  • 14

    ZXVR

    ZX Spectrum emulator for Oculus Rift!

    ZXVR is a ZX Spectrum emulator for Virtual Reality. It supports the Oculus Rift and simulates a room which recalls the 80's style and you have a Spectrum and a TV set where you play Spectrum games. There's also a cinema screen representation.
    Downloads: 5 This Week
    Last Update:
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  • 15

    jo2emLauncher

    portable o2em launcher

    jo2emLauncher stands for Java o2em launcher. It is a GUI to help people use o2em (the odyssey 2 / videopac emulator). Currently available launcher are only for windows. As jo2emLauncher is 100% java, it is able to run on a wide range of platforms. The first target is linux.
    Downloads: 5 This Week
    Last Update:
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  • 16
    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: 4 This Week
    Last Update:
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  • 17
    For new versions, check https://github.com/Darkkey/javaNetSim javaNetSim (Java Network Simulator) - it's a fork of a project jFirewallSim. The main goal of javaNetSim is creating a software to simulate various TCP/IP networks based on Ethernet, WiFi, PPP, etc...
    Downloads: 4 This Week
    Last Update:
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  • 18
    Emutils

    Emutils

    Search and manage batches of D64/etc files.

    Emutils are a collection of utilities for dealing with files which are in formats most commonly used by Commodore 64 emulators (D64, D71, D81, etc). These include search tools, extractors, converters, archive tools, etc. especially for batch operations.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 19
    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
  • 20
    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: 3 This Week
    Last Update:
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  • 21
    Microdigital TK2000 II Color Computer emulator.
    Downloads: 3 This Week
    Last Update:
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  • 22

    mspsim

    Java-based instruction level emulator of MSP430. Code on github.

    A Java-based instruction level emulator of the MSP430 series microprocessor and emulation of some sensor networking platforms. Supports loading of IHEX and ELF firmware files, and has some tools for monitoring stack, setting breakpoints, and profiling. Note that the latest code now resides at github.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 23
    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
    Last Update:
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  • 24
    Fx702p

    Fx702p

    A Casio Fx702p handheld-computer emulator

    A fully-featured Casio Fx702p emulator including the calculator mode, a full basic implementation and a original debugger as well as some sample programs.
    Downloads: 5 This Week
    Last Update:
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  • 25
    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: 2 This Week
    Last Update:
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