Open Source JavaScript Emulators
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JavaScript Emulators
View 8476 business solutionsBrowse free open source JavaScript Emulators and projects below. Use the toggles on the left to filter open source JavaScript Emulators by OS, license, language, programming language, and project status.
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Secure User Management, Made Simple | FronteggFrontegg powers modern businesses with a user management platform that’s fast to deploy and built to scale. Embed SSO, multi-tenancy, and a customer-facing admin portal using robust SDKs and APIs – no complex setup required. Designed for the Product-Led Growth era, it simplifies setup, secures your users, and frees your team to innovate. From startups to enterprises, Frontegg delivers enterprise-grade tools at zero cost to start. Kick off today.
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Gen AI apps are built with MongoDB AtlasMongoDB Atlas is the developer-friendly database used to build, scale, and run gen AI and LLM-powered apps—without needing a separate vector database. Atlas offers built-in vector search, global availability across 115+ regions, and flexible document modeling. Start building AI apps faster, all in one place.
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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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SockJS-client
WebSocket emulation and Javascript client
SockJS is a browser JavaScript library that provides a WebSocket-like object. SockJS gives you a coherent, cross-browser, Javascript API which creates a low latency, full duplex, cross-domain communication channel between the browser and the web server. Under the hood SockJS tries to use native WebSockets first. If that fails it can use a variety of browser-specific transport protocols and presents them through WebSocket-like abstractions. SockJS is intended to work for all modern browsers and in environments which don't support the WebSocket protocol, for example, behind restrictive corporate proxies. SockJS-client does require a server counterpart, such as SockJS-node, which is a SockJS server for Node.js. The API should follow HTML5 Websockets API as closely as possible. All the transports must support cross domain connections out of the box. It's possible and recommended to host a SockJS server on a different server than your main web site. -
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quadplay
The quadplay fantasy console
quadplay✜ is a fantasy console by CasualEffects for creating and playing retro-style video games on any device. Create and play games on any laptop, desktop, tablet, or phone. Or, build your own programmable arcade machine from a Raspberry Pi, Tegra, or old computer. Create games on Windows, macOS, Linux. Play your games in any modern web browser on a laptop, desktop, tablet, phone, Raspberry Pi 4, or Jetson Nano. 60 fps @ 384 x 224 pixels = 12:7 aspect ≈ 16:9.3. 4096 sRGB (4:4:4) colors. Four players with virtual controls for D-pad and eight buttons. Local and safe online multiplayer. Supports Xbox, Playstation, SNES, Stadia, Switch, 8bitdo, touch screen, and other controllers. Hundreds of built-in sprites, sounds, and fonts. Program in PyxlScript, a friendly Python-like language. Order-independent, 4-bit alpha transparency. Native 2.5D graphics with z-order. -
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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. -
Enterprise-grade ITSM, for every businessFreshservice is an intuitive, AI-powered platform that helps IT, operations, and business teams deliver exceptional service without the usual complexity. Automate repetitive tasks, resolve issues faster, and provide seamless support across the organization. From managing incidents and assets to driving smarter decisions, Freshservice makes it easy to stay efficient and scale with confidence.
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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.
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HWSensors
All information from hardware sensors on your Mac
HWSensors is a software bundle that includes drivers and applications that allow you to access information from hardware sensors available on your Mac. FakeSMC is an open source SMC device driver/emulator developed by netkas (http://netkas.org/). NOTE: FakeSMC & Plugins starting from v915 provide additional sensors information to HWMonitor then running on Macs. By installing FakeSMC on real Mac you should consider you know what you are doing and how to recover your system if something will goes wrong. All repositories: Sourceforge, sources & downloads: https://sourceforge.net/projects/hwsensors/ BitBucket, sources & downloads: https://bitbucket.org/kozlek/hwsensors/overview Assembla, sources: https://www.assembla.com/code/fakesmc/git/nodes GitHub, sources: https://github.com/kozlek/HWSensors HWSensors Project (c) 2014 netkas, slice, usr-sse2, kozlek, navi, THe KiNG, RehabMan and others. All rights reserved. -
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QMC2 is a Qt based multi-platform GUI front end for MAME NOTE: A new version is hosted and developed at https://github.com/qmc2/qmc2-mame-fe
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ArduSim
To be a practical Arduino simulator
ArduSim provides API level simulation of an Arduino. Arduino sketches can be run and debugged on PC with no modification. ArduGate is a sub-project of ArduSim. The agent sketch is shared. -
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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/ -
Test your software product anywhere in the worldGlobal App Testing is a managed pool of freelancers used by Google, Meta, Microsoft, and other world-beating software companies.
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The first MSX Emulator 100% written in Javascript, using the new [canvas] tag to display graphics efficiently in web browsers like Firefox 2.0+.
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Beagle Entertainment System
Turns the BeagleBone Black into a Nintendo-based retrogaming console.
The Beagle Entertainment System (BES) project is a complete filesystem image that turns the ARM-based BeagleBone Black single board computer into an embedded appliance capable of playing software for the SNES, NES, GBA, and Gameboy Color platforms. A full system image, ready to be written to a microSD card and used as-is, is available for download. Just connect your BES-enabled BeagleBone Black to your network and you can use BES's Node.js web interface to add or remove ROMs, configure gamepads, and edit ROM descriptions for the front-end GUI. There's no need to hand edit configuration files or manually copy ROM files onto the microSD card! BES source: https://github.com/hendersa/bes BES web interface: https://github.com/hendersa/bes-config-node BES kernel device tree: https://github.com/hendersa/bes-dtb-rebuilder -
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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. -
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To give Firefox the unfortunate but desirable compatibility of (Microsoft) Internet Explorer (IE), using a (Mozilla) Firefox extension/plugin. I'm not trying to insert an IE object in a Firefox tab, no, no, no... Any support is welcome
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A simple, intuitive Javascript keyboard for Indic Languages such as Hindi, Sanskrit and Gujarati, based on Unicode characters.
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JSGB is a Nintendo GameBoy emulator. Written in JavaScript and HTML5. Integrates a debugger with breakpoints support, memory, viewer and more... You can test it here: www.codebase.es/jsgb/?v=0.02
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PC Emulator that runs inside a JavaScript environment. Demonstration can be seen booting FreeDOS at http://pc-emulator.appspot.com (useful for running old DOS shareware games) and graphical Linux at http://linuxjsemu.appspot.com/ (rather slowly). Runs best in Chrome browser. See my other JavaScript PC emulator project at http://sourceforge.net/projects/jsdosbox (faster, also includes a dynarec and sound)
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PHPterm is a terminal/shell emulator for PHP which let's you execute shell commands just like in a shell, but all within your browser window over the HTTP protocol. It aims to provide the look and feel of konsole, the KDE terminal.
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This project aims to provide a common building block for projects such as ADEFU, SEA and VISUAL and other scada projects so that they have a common interface to the PLC\'s they communicate with. PLC\'s are Programmable Logic Controllers built to
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Serverless Offline
Emulate AWS λ and API Gateway locally
This Serverless plugin emulates AWS λ and API Gateway on your local machine to speed up your development cycles. To do so, it starts an HTTP server that handles the request's lifecycle like APIG does and invokes your handlers. Options passed on the command line override YAML options. List of available function names and their corresponding serverless.yml function keys are listed after the server starts. This is important if you use a custom naming scheme for your functions as serverless-offline will use your custom name. The left side is the function's key in your serverless.yml and the right side is the function name that is used to call the function externally such as aws-sdk. Once you run a function that boots up the Docker container, it'll look through the layers for that function, download them in order to your layers folder, and save a hash of your layers so it can be re-used in future. -
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Simple 8-bit Assembler Simulator
Simple 8-bit Assembler Simulator with Angular.js
A simulator that provides a simplified assembler syntax (based on NASM) and is simulating an x86-like CPU. Press Help inside the simulator to see an overview of the supported instructions. Make sure you have Grunt installed to compile the asmsimulator.js script. Run grunt to build the project. The simulator is written in JavaScript with Angular and runs on every device with a web browser. It has a lot of simplifications and constraints, but it is the basic structure of every emulator. The console output uses memory mapping and maps a specific portion of the memory to the console. Thus writing to the console output is as simple as writing into a specific memory location. The CPU reads instructions from the memory and executes them. The memory contains our program code and can be used by the program to store data. -
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Unreal Speccy portable
Portable ZX-Spectrum emulator based on UnrealSpeccy 0.37.3 by SMT
Portable ZX-Spectrum emulator supports Z80 128K (Pentagon) AY/YM, Beeper, Beta Disk, Tape, Kempston Joystick/Mouse, Snapshots, Replays. Supported formats: sna, z80, szx, rzx, tap, tzx, csw, trd, scl, fdi, zip. Created to be ported to many platforms such as Windows/Linux/Mac/Symbian/Dingoo A320/Android/iOS/PSP/Raspberry Pi, ... -
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YASP (Yet Another Simple Processor) is a 8-bit microprocessor with microcontroller capabilities (I/O ports, REQ, ACK) that can be used as a small computer for educational purposes. Its development environment includes simulators and assemblers.
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Yahbee [Outdated, see description]
Yet another hacky, bad emulator of a terminal inferface
These Files Are Outdated =================== I have ceased to update this page, SourceForge is too laggy and a pain in the arse to update. Latest developments & live demos can be found at http://yahbee.comlu.com (Blog Version) or http://beehive.yahbee.comlu.com (Raw & Latest Version) * * * * * * * * * * * * An experiment and tinker toy which was put together for the fun of it. Originally stemmed from http://bit.ly/UYO2CN as a snippet of code. -
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jnes
NES emulator written in JavaScript
jNES is an emulator for the classic Nintendo Entertainment System video game console. It is writtern in JavaScript
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