Dev tools · alternatives · 2026

24 alternatives to js-coroutines

Javascript heavy lifting without the jank! Your code @ 60fps

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. js-coroutines launched in 2020; newer entries below may have overtaken it.

1. 1
   60fps JavaScript with this lib. Run anything during idle time▲8

   The power to sort, stringify, compress, decompress and run your complex calculations while staying smooth and interactive at 60fps

   2020 · js-coroutines.com · its alternatives →

2. 2
   Fast.js – faster reimplementations of native JavaScript functions▲323

   Faster user-land reimplementations for several common builtin native JavaScript functions. - codemix/fast.js

   2014 · github.com · its alternatives →

3. 3JL
   JS library to make your website instant▲426

   http://instantclick.io/ It seems the internet architecture won't bring us instant websites anytime soon. So here is a hack. I released this JS library last month (today is version 2.0 release, fixing v1.0's rough edges), it makes use of HTML5's pushState and preloading to make a website instant. It works like this: before clicking on a link, you'll hover over it. And there's a delay of 200-300 ms between these two events. InstantClick uses this delay to preload a page, when you click on a link it will display instantly in most case. (You can test on the website.) That's…

   2014 · its alternatives →

4. 4VJ
   Velocity.js – Accelerated JavaScript animation▲160

   Velocity.js: An incredibly fast animation engine for motion designers.

   2014 · velocityjs.org · its alternatives →

5. 5
   Faster.js – a micro-optimizing JavaScript compiler▲89

   faster.js is a Babel plugin that compiles idiomatic Javascript to faster, micro-optimized Javascript. - vzhou842/faster.js

   2018 · github.com · its alternatives →

6. 6
   Simulating 20M Particles in JavaScript▲561

   Had some fun with shared array buffers over many months of free time. Skip to the end to play around with the final app. Open to ideas on how to simulate more whilst staying in js land.

   2024 · dgerrells.com · its alternatives →

7. 7
   30 seconds of code▲252

   JS snippets that you can understand in 30 seconds or less.

   2018 · github.com · its alternatives →

8. 8
   30 seconds of code▲337

   Short code snippets for all your development needs

   2020 · 30secondsofcode.org · its alternatives →

9. 9
   Fast 2kB date library alternative to Moment.js with the same API▲122

   ⏰ Day.js 2kB immutable date-time library alternative to Moment.js with the same modern API - iamkun/dayjs

   2018 · github.com · its alternatives →

10. 10AI
    An Isomorphic JavaScript Framework Faster Than React▲337

    2015 · jsblocks.com · its alternatives →

11. 11CA
    Coi – A language that compiles to WASM, beats React/Vue▲225

    I usually build web games in C++, but using Emscripten always felt like overkill for what I was doing. I don't need full POSIX emulation or a massive standard library just to render some stuff to a canvas and handle basic UI. The main thing I wanted to solve was the JS/WASM interop bottleneck. Instead of using the standard glue code for every call, I moved everything to a Shared Memory architecture using Command and Event buffers. The way it works is that I batch all the instructions in WASM and then just send a single "flush" signal to JS. The JS side then reads everything directly out…

    Jan 2026 · its alternatives →

12. 12
    1 KB JavaScript library for building front end apps▲242

    1kB-ish JavaScript framework for building hypertext applications - hyperapp/hyperapp

    2017 · github.com · its alternatives →

13. 13
    Graphics.js▲93

    Made a video game in < 15 min

    2022 · github.com · its alternatives →

14. 14SU
    Speed up your site by running JavaScript when the browser is idle▲94

    2022 · npmjs.com · its alternatives →

15. 15
    1 KB JavaScript framework for building front-end applications▲216

    1kB-ish JavaScript framework for building hypertext applications - hyperapp/hyperapp

    2017 · github.com · its alternatives →

16. 16
    Webstudio Animations▲160

    Silky-smooth, uninterrupted scroll-driven web animations

    2025 · webstudio.is · its alternatives →

17. 17
    Minified.js – a fully-featured, 4K alternative to jQuery and MooTools▲158

    2013 · minifiedjs.com · its alternatives →

18. 18MA
    Made a small JavaScript benchmarking app – BenchJS▲33

    Run, compare, and share JavaScript benchmarks in your browser with BenchJS.

    2024 · benchjs.com · its alternatives →

19. 19MY
    Make your web page dance with Rythm.js▲183

    2017 · okazari.github.io · its alternatives →

20. 20
    Min.js style compression of tech docs for LLM context▲177

    Min.js Style Compression of Tech Docs for LLM Context - marv1nnnnn/llm-min.txt

    2025 · github.com · its alternatives →

21. 21
    Get Fast▲61

    Measure the speed of your code

    2023 · its alternatives →

22. 22AT
    A Time-Sharing Scheduling Coroutine Script Language▲22

    A script language of time-sharing scheduling coroutine in single thread

    2023 · melang.org · its alternatives →

23. 23
    PlayJS▲138

    Playground JavaScript web, now with superpowers

    2023 · its alternatives →

24. 24
    NotebookJS▲109

    Scientific computation for JavaScript

    2016 · datazar.com · its 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 →