Alternatives

Products that do what Explore IOCCC 2020 entries in the browser via CheerpX (x86-to-WASM JIT) does

1CX
CheerpX – x86 Node.js/python3/Ruby REPL in browser via WebAssembly JIT▲88
2021 · repl.leaningtech.com
2CX
CheerpX – x86 virtualization in browser using WebAssembly – Python Demo▲26
2020 · leaningtech.com
3
Apache Weex▲127
A framework for building mobile cross-platform UIs
2017
4EQ
Explore Quake/Half-Life maps in your browser▲192
2020 · github.com
5TI
Tux.io – a (now working) Linux desktop in your browser▲64
2017 · tux.io
6RP
Run Python, Ruby, Node.js, C++, Lua in the Browser via x86 to WASM JIT▲171
2021 · repl.leaningtech.com
7IA
I am building a next-gen browser▲68
2011 · ashraful.org
8SA
Shox: A customisable status bar for your terminal▲99
2020 · github.com
9
UI Tiles▲86
Website Flowcharts.
2014
10
ZenHub for Firefox▲99
Turn GitHub into a project management suite! Plus, socks
2015
11H1
Hyperapp – 1 KB JavaScript library for building front end apps▲69
2017 · github.com
12AS
A Sinclair ZX81 retro web assembler+simulator▲80
Lots of fun to do. I would have not taken the time without the speedup provided by Claude. https://andyrosa.github.io/Sinclaude/simulator.html
2025
13MA
Memex – annotate and instantly recall any website▲52
After 18 months of tinkering and iterating, we want to show you our Memex: An open-source browser extension to effortlessly organise your web-research. We'd love to know what you think :) Check it out at https://worldbrain.io/hn Memex features: - Instantly find websites you visited with the fuzzy memories you have about them, instead of bookmarking everything or keeping dozens of open tabs. Search for every word of every website you’ve seen, and filter by time, domain, custom tags or bookmarks. - Add your thoughts to websites via comments & annotations, directly in the browser…
2018
14
WebVM▲11
Run a full Linux environment in the browser
Jan 2026
15FL
FastDom – Lightweight replacement of React and MobX▲41
2019 · github.com
16IB
I built a self-hosted StatusPage.io alternative. Try the demo▲13
2015 · statusdeck.com
17MN
My new app, Cloak for OSX▲41
2011 · blog.getcloak.com
18OS
Open-source in-browser code editor/executor with REPL, 10+ languages▲29
I am super excited to open-source the code executor behind logicboard.com - an in-browser collaborative code editor. The backend is written in Elixir+Phoenix and implements a WebSocket API to execute code in docker containers. Next steps include making this more secure, I am considering Google's gVisor to implement better isolation between containers and the host kernel.
2023 · github.com
19GA
Geeonx a Multiplatform C GUI-Library (Linux, Windows, macOS)▲23
2019 · geeonx.org
20GL
Git(lab), Jenkins, Redmine and IRC on our wall▲28
I've always dreamed about a project like that when looking at status boards at other companies. We finally had the time to do our own. Here are some photos: http://www.flickr.com/photos/robert_olejnik/sets/72157633736087905/ The stack: Django, mustache.js, Chart.js, Bootstrap and custom Supybot plugin. Maybe will be inspiration for someone else ;-) Do you guys have similar status boards? Cheers, Robert.
2013
21RL
Run, learn, and debug x86-64 Assembly code directly from your browser▲12
I recently created this project to teach assembly, and to have an assembly playground in the style of codepen/jsfiddle to embed in my blog posts. It's based on a wasm version of the blink x86-64 emulator, so everything runs client side with no backend server and with a runtime of only ~200Kb
2024 · x64.halb.it
22DH
Discover HaxeFlixel▲17
2016 · discover-haxeflixel.com
23I2
Imba 2.0 – The JavaScript Alternative by Scrimba (YC S20)▲20
2021 · imba.io
24RA
Reactylon – A new way to build XR with React and Babylon.js▲6
2025 · github.com

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