Open Source Java Emulators
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Java Emulators
View 2004 business solutionsBrowse 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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Vectras VM
It's a Virtual Machine App for Android Which is Based on QEMU
Vectras VM Android is a mobile virtualization platform built on top of QEMU that enables users to run full desktop operating systems directly on Android devices. It functions as a complete virtual machine manager, allowing the emulation of systems such as Windows, Linux, macOS, and even other Android environments within a single app. The project is designed to push the limits of mobile hardware by leveraging modern smartphone CPUs and RAM configurations to simulate full computing environments. It includes a graphical interface and setup tools that simplify the process of creating and managing virtual machines, making it accessible beyond purely technical users. The emulator supports different architectures and integrates additional components like 3dfx wrappers to improve graphical compatibility and performance. Due to the heavy computational requirements, it is optimized for newer devices with high-end processors and sufficient memory. -
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This is Java 2 Micro Edition (J2ME) CLDC/MIDP Emulator. Allows demonstrate MIDlet based applications in web browser applet, also can be run as standalone java application.
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J2ME-Loader
A J2ME emulator for Android
J2ME-Loader is a J2ME emulator for Android. It supports most 2D and 3D games (including Mascot Capsule 3D ones). Emulator has a virtual keyboard, individual settings for each application, scaling support. This project is a fork of J2meLoader. Enabling filtering in some cases can greatly reduce performance. Disable this option if the game is too slow. Image flickering issues can be fixed by enabling the "Immediate processing mode" option. -
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Vanced MicroG
Seamless Google account support for modified apps
Vanced microG is a lightweight companion app designed to enable the seamless functionality of YouTube Vanced and other modified apps that rely on Google services. It acts as a replacement for the Google Play Services framework, allowing users to log into their Google accounts and sync preferences without compromising privacy. Vanced microG is essential for running apps like YouTube Vanced, providing authentication and push notification support without requiring the full suite of Google services. With its minimal resource usage and focus on user privacy, Vanced microG is an indispensable tool for enhancing the functionality of modified Android apps. -
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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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floci
Light, fluffy, and always free, the AWS Local Emulator alternative
Floci is a free, open-source local AWS emulator designed as a lightweight alternative for testing cloud applications without using a real AWS account. It is built around a simple Docker-based workflow where developers can start the emulator and point standard AWS tools at a local endpoint. The project emphasizes no accounts, no authentication gates, no paid feature tiers, and broad local service coverage. It supports many AWS-style services, including storage, queues, databases, identity, compute, streaming, deployment, and infrastructure-related APIs. Floci is useful for development teams that want faster feedback loops, cheaper local testing, and repeatable integration environments. It also includes compatibility testing, multi-account isolation, persistence modes, SDK integration, and migration guidance for teams coming from other local cloud emulators. -
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Muon SSH Terminal/SFTP client
Graphical SFTP client and terminal emulator with helpful utilities
Easy and fun way to work with remote servers over SSH. This project is being renamed as previous name "Snowflake" is confusing since there is already a popular product with the same name. Muon is a graphical SSH client. It has an enhanced SFTP file browser, SSH terminal emulator, remote resource/process manager, server disk space analyzer, remote text editor, huge remote log viewer, and lots of other helpful tools, which makes it easy to work with remote servers. Muon provides functionality similar to web-based control panels but, it works over SSH from the local computer, hence no installation is required on the server. It runs on Linux and Windows. Muon has been tested with several Linux and UNIX servers, like Ubuntu server, CentOS, RHEL, OpenSUSE, FreeBSD, OpenBSD, NetBSD, and HP-UX. The application is targeted mainly towards web/backend developers who often deploy/debug their code on remote servers and not overly fond of complex terminal-based commands. -
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ASAP (Another Slight Atari Player) plays and converts 8-bit Atari music (*.sap, *.cmc, *.mpt, *.rmt, *.tmc, ...) on modern computers and mobile devices.
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AndroidSDK
Full-fledged Android SDK Docker Image
AndroidSDK is a Docker-based development environment that provides a complete, portable Android SDK setup for building, testing, and deploying Android applications in a consistent and reproducible way. Instead of installing and configuring the Android SDK locally, developers can run a preconfigured container that includes essential tools such as the SDK, build tools, Gradle, and Kotlin compiler. This approach solves common issues related to environment inconsistency, such as dependency conflicts or differences between developer machines and CI pipelines. The project emphasizes minimalism and flexibility by shipping only a base SDK image, allowing developers to mount their own SDK components and customize installations as needed. It is particularly useful in continuous integration workflows, where deterministic builds and clean environments are critical. -
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Java SID Player Music Library V2
C64 Emulator
This is a Commodore 64 emulator specialized for sound reproduction. It is also a SID player for music collections like HVSC and CGSC. It is a full C64 emulator and can play games of the GameBase64 project as well. -
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Coffee GB
Gameboy emulator in Java 8
Coffee GB is a Gameboy Color emulator written in Java 8. It's meant to be a development exercise. More info can be found in the blog post. First I implemented all the Gameboy CPU opcodes. It’s not exactly the Z80, but it’s pretty close. As a reference, I’ve used the GameBoy CPU Manual - later on I discovered that it has a few typos and is not specific enough for some of the operations. After implementing the opcodes and memory (modelled by an int[] array) I was eager to check whether it’s possible to run some code on it. I had neither the cartridge nor the GPU emulation yet, so even the simplest game wouldn’t be an option. However, when the original Gameboy starts, it executes a simple 256-bytes program, a kind of firmware displaying the Nintendo logo and self-testing the system. That was exactly the thing I was looking for - after just 3 days I had an application running the Gameboy code! -
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IKVM.NET is a JVM for the Microsoft .NET Framework and Mono. It can both dynamically run Java classes and can be used to convert Java jars into .NET assemblies. It also includes a port of the OpenJDK class libraries to .NET.
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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/. -
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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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Simplify
Android virtual machine and deobfuscator
Simplify virtually executes an app to understand its behavior and then tries to optimize the code so that it behaves identically but is easier for a human to understand. Each optimization type is simple and generic, so it doesn't matter what specific type of obfuscation is used. Provides a virtual machine sandbox for executing Dalvik methods. After executing a method, it returns a graph containing all possible register and class values for every execution path. It works even if some values are unknown, such as file and network I/O. For example, any if or switch conditional with an unknown value results in both branches being taken. Analyzes the execution graphs from smalivm and applies optimizations such as constant propagation, dead code removal, unreflection, and some peephole optimizations. These are fairly simple, but when applied together repeatedly, they'll decrypt strings, remove reflection, and greatly simplify code. It does not rename methods and classes. -
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unidbg
Allows you to emulate an Android native library
Allows you to emulate an Android native library, and an experimental iOS emulation. This is an educational project to learn more about the ELF/MachO file format and ARM assembly. Emulation of the JNI Invocation API so JNI_OnLoad can be called. Support JavaVM, JNIEnv. Emulation of syscalls instruction. Support ARM32 and ARM64. Inline hook, thanks to Dobby. Android import hook, thanks to xHook. iOS fishhook and substrate and whale hook. unicorn backend support simple console debugger, gdb stub, instruction trace, memory read/write trace. Support iOS objc and swift runtime. Support dynarmic fast backend. Support Apple M1 hypervisor, the fastest ARM64 backend. Support Linux KVM backend with Raspberry Pi B4. -
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Apple Disk Transfer ProDOS
Transfer disks and disk images between the Apple II and the real world
Apple Disk Transfer ProDOS (ADTPro) transfers classic 8-bit Apple disk images over a serial, ethernet or audio link to a more modern computer. Based on the seminal ADT, ADTPro can transfer any ProDOS- or SOS-visible volume. -
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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.
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Amstrad CPC-Emulator in JAVA, based on JEMU by R. Wilson. I am searching for good JAVA-coders who are also knowledgable in emulating 8bit homecomputers.
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A Java-based Commodore 64 emulator for mobile devices and PCs. If you want to see the old C64 become alive on your mobile phone or PC then try this emulator. For more information see the Wiki pages http://sourceforge.net/apps/mediawiki/jmec64/index.php.
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Be warned this project was discontinued in 2013 and has not been updated in years.
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TURGEN
Create your own Atari tapes
With TURGEN, you can record your own tapes with software for Atari 8-bit computers, and transfer data from your PC or Mac to your Atari 8-bit computer using your data recorder and a cassette adapter. TURGEN converts digital images of Atari software to the original standard Atari tape records and also various "turbo" systems. You can create WAVE files, tape images, or send the signal directly to the sound card. Tools such as Wizard for files, Tape Side Creator, Dual Track Tape creator and Batch processing allow you to create tapes with convenience -
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z390 Portable Mainframe Assembler
z390 Portable Mainframe Assembler and Emulator
z390 Portable Mainframe Assembler and Emulator -
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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.
