Life & fun · alternatives · 2026
24 alternatives to TempleOS Playground
I noticed that Fabrice Bellard added x86_64 support to JSLinux, and I decided to do some work getting TempleOS up and running on it. Enjoy the fruits of my labor: TempleOS, running locally in your browser, completely unoptimized, with some convenient tools for debugging and playing around.
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
TempleOS is an experimental OS designed to be simple and self-hosted with a JIT compiler. I was mesmerized by it but didn't like the hassle of using virtual machines to boot it up and move files around from the virtual drive. My project lets you run TempleOS as an app of some sort instead of using a virtual machine to run it - this brings a lot of benefits like speed, seamless filesystem integration (virtual machine development with stock TempleOS is really a pain.), command-line mode where you can code in HolyC on the command line instead of TempleOS' GUI. Its user-space nature lets it do…
2024 · github.com · its alternatives →
- 2
Run KolibriOS, Linux or Windows 98 in your browser
2013 · copy.sh · its alternatives →
- 3
This TypeScript package allows you to safely execute JavaScript code within a WebAssembly sandbox using the QuickJS engine. Perfect for isolating and running untrusted code securely, it leverages the lightweight and fast QuickJS engine compiled to WebAssembly, providing a robust environment for code execution. Features - *Security*: Run untrusted JavaScript code in a safe, isolated environment. - *File System*: Can mount a virtual file system - *Custom Node Modules*: Custom node modules are mountable - *Fetch Client*: Can provide a fetch client to make http(s) calls - *Test-Runner*: Includes…
2024 · github.com · its alternatives →
- 4
This is the entire Firefox browser rendering to a element. Gecko, all UI components, and the Spidermonkey JS engine are all compiled and running in WebAssembly. Here are a few things you might find interesting: - This is fully end to end encrypted! We use the WISP protocol for TCP-over-websockets. - There is a novel WASM->JS JIT for experimental site speedup - This port cost over 25k in opus/fable tokens for debugging and JIT research This was just a fun experiment to push the boundaries of WebAssembly. For a more usable "browser in browser" experience, we also built…
Jul 2026 · developer.puter.com · its alternatives →
- 5
A self-hostable Wasm sandbox for JavaScript workers.
Jun 2026 · kyushu.dev · its alternatives →
- 6
RedwoodJS▲203Hey everyone, I'm the original co-creator of RedwoodJS. (The framework that myself and Tom Preston-Werner, Rob Cameron and David Price built during Covid.) I had tried to build a developer tool startup (Snaplet), and failed. I rejoined the efforts to add RSC to Redwood, but I realized that we needed a much simpler framework that was closely tied to a platform (We chose Cloudflare). We started building RedwoodSDK a year ago and this is the result. An insanely simple stack. I am incredibly proud of this work, please star our repo and let me know if there's anything that doesn't resonate with…
2022 · rwsdk.com · its alternatives →
- 7GP
2021 · go-playground-wasm.vercel.app · its alternatives →
- 8WM
2016 · webblocks.uk · its alternatives →
- 9
The purely functional user interface library that
2018 · kbrsh.github.io · its alternatives →
- 10
- 11SI
2014 · ibuildthecloud.com · its alternatives →
- 12
- 13
Write, run, and test JavaScript snippets & JSON offline
Aug 2026 · chromewebstore.google.com · its alternatives →
- 14
Jsblocks▲97Faster than AngularJS and ReactJS. Better MV-ish Framework.
2015 · jsblocks.com · its alternatives →
- 15NJ
I was looking for a tiny library to easily transform both 2D & 3D objects with simple mouse / touch controls and a fixed camera, in the browser. Like a simple 3D editor but without requiring the user to be a Blender expert. Couldn't find anything lightweight, so I’m building one. Think Fabric.js but for 3D. Built entirely with Three.js / R3F. Borrowed some inspiration from VR/AR interaction systems for controls. Feel free to play with it and let me know what you think!
2025 · punk.cam · its alternatives →
- 16OS
2012 · ubercomp.com · its alternatives →
- 17
I recently stripped out Django from my personal site and converted it to a static site, using `staticjinja`. I found myself writing a lot of custom code to get my site going because I wanted to use Jinja templating inside Markdown. Once I was done, I decided to strip out `staticjinja` in favour of my own site generator. And so Jinjabread was born!
2024 · github.com · its alternatives →
- 18VJ
Vertex is a 1kloc SPA framework containing everything you need from React, Ractive-Load and jQuery while still being jQuery-compatible. vertex.js is a single, self-contained file with no build step and no dependencies. Also exhibits the curious quality of being faster than over a decade of engineering at Facebook in some cases: https://files.catbox.moe/sqei0d.png
Mar 2026 · lukeb42.github.io · its alternatives →
- 19JE
2013 · jor1k.widgetry.org · its alternatives →
- 20
Hi HN, I've been building Mystral Native — a lightweight native runtime that lets you write games in JavaScript/TypeScript using standard Web APIs (WebGPU, Canvas 2D, Web Audio, fetch) and run them as standalone desktop apps. Think "Electron for games" but without Chromium. Or a JS runtime like Node, Deno, or Bun but optimized for WebGPU (and bundling a window / event system using SDL3). Why: I originally started by starting a new game engine in WebGPU, and I loved the iteration loop of writing Typescript & instantly seeing the changes in the browser with hot reloading. After…
Jan 2026 · github.com · its alternatives →
- 21
Jylos▲3Local-first open-source Markdown knowledge management app
Jun 2026 · rgiskard7.github.io · its alternatives →
- 22
Hi there, Zero Stars here. I recently published some new work to Hokusai Pocket, which is a cross-platform binary made on top of raylib and MRuby that runs GUIs from ruby scripts. License? MIT! How does it work? The binary is available on the GitHub releases page: https://github.com/skinnyjames/hokusai-pocket/releases/tag/0... You can download the binary on x86 Windows, OSX, or Linux, and run your GUI application with hokusai-pocket run:target="" For a little bit of a hello world, I started a photoshop clone…
Apr 2026 · github.com · its alternatives →
- 23UJ
Leaning Technologies - We bring applications to the Web.
2017 · cheerpjdemos.leaningtech.com · its alternatives →
- 24BR
box86js: run 32-bit linux binary directly in browser
2021 · raoofha.github.io · its alternatives →
Also compare
- Running TempleOS in user space without virtualization alternatives
- My x86 emulator written in JavaScript alternatives
- Execute JavaScript in a WebAssembly QuickJS sandbox alternatives
- Firefox in WebAssembly alternatives
- Kyushu – A self-hostable WASM sandbox for JavaScript workers alternatives
- RedwoodJS alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →