Dev tools · alternatives · 2026

24 alternatives to Radi.js

JavaScript framework that's quite different and super fast

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Radi.js launched in 2018; newer entries below may have overtaken it.

1. 1RJ
   Radi.js is a tiny (3kB minified and gzipped) JavaScript framework▲7

   🌀Tiny (in size) front-end framework with no extra browser re-flows

   2018 · radi.js.org · its alternatives →

2. 2
   HyperApp – 1k JavaScript framework for building web applications▲303

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

   2018 · github.com · its alternatives →

3. 3
   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 →

4. 4
   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 →

5. 5
   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 →

6. 6AI
   An Isomorphic JavaScript Framework Faster Than React▲337

   2015 · jsblocks.com · its alternatives →

7. 7
   1kb JavaScript library for building front end applications▲187

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

   2017 · github.com · its alternatives →

8. 8
   Hyperdiv – Reactive, immediate-mode web UI framework for Python▲170

   Hello HN, I'm releasing Hyperdiv (https://hyperdiv.io), a framework for rapidly developing reactive browser UIs in Python, with immediate-mode syntax and using Shoelace (https://shoelace.style) as its built-in component system. This short coding video will give you a good idea of what it is: https://www.youtube.com/watch?v=4XJKfxaqvGE I wrote a brief article about the motivation and approach: https://hyperdiv.io/intro.html Hyperdiv doesn't aim to compete with serious full-stack frameworks. The core aim was to make it easy and fast to…

   2024 · github.com · its alternatives →

9. 9
   Minified.js – a fully-featured, 4K alternative to jQuery and MooTools▲158

   2013 · minifiedjs.com · its alternatives →

10. 10
    1 KB JavaScript library for building applications▲116

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

    2017 · github.com · its alternatives →

11. 11
    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 →

12. 12
    Lowdefy – Build internal tools with YAML on an open-source framework▲107

    We're excited to announce Lowdefy V4, a full-stack web framework built on top of Next.js that simplifies building web applications, internal tools, admin panels, BI dashboards, and CRUD apps using YAML or JSON configuration files. New in V4: Next.js: Lowdefy now runs on top of the Next.js framework. All of Auth.js: App auth is now handled by Auth.js supported providers, adapters and callbacks and events, easy to configure, but all of which can be customized. Plugin extensibility: Apps can now be extended with any npm or pnpm workspace plugins. Our story: We have developed a simple…

    2021 · lowdefy.com · its alternatives →

13. 13
    Sapper.js – towards a better web app framework▲410

    Taking the next-plus-one step

    2018 · svelte.technology · its alternatives →

14. 14MN
    My new JavaScript MVC framework▲304

    2014 · lhorie.github.io · its alternatives →

15. 15
    Hyperapp – 1 KB JavaScript library for building front end apps▲69

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

    2017 · github.com · its alternatives →

16. 16
    Swap.js – a JavaScript micro-framework (HTML fragments over the wire)▲127

    Hi HN! I created this lib in the need of a simple and tiny framework to easily do AJAX-style navigation / replacement of fragments in the page, in a web application. For people who don't want to use client-side-rendering and complex frameworks à la React, there are nowadays a few "HTML-over-the-wire" libraries, like HTMX, Unpoly or this super-tiny one Swap.js :) One other key thing is that no external tool is needed: no bundler, no webpack, no TypeScript compiler, no minification needed. Just write HTML, JS (+ your preferred server-side language: PHP, Python, etc.) and it works. The…

    2023 · github.com · its alternatives →

17. 17
    Quokka▲93

    Rapid prototyping playground for JavaScript in your editor

    2017 · quokkajs.com · its alternatives →

18. 18
    Micro JavaScript framework inspired by finite-state machine▲60

    UI as finite-state machine . Contribute to stepanvanzuriak/Finite development by creating an account on GitHub.

    2018 · github.com · its alternatives →

19. 19
    1 kB JavaScript framework for building front end applications▲12

    1kB-ish JavaScript framework for building hypertext applications - Hyperapp V2 by jorgebucaran · Pull Request #726 · hyperapp/hyperapp

    2018 · github.com · its alternatives →

20. 20
    Execute JavaScript in a WebAssembly QuickJS sandbox▲206

    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 →

21. 21
    µJS, a 5KB alternative to Htmx and Turbo with zero dependencies▲161

    I built µJS because I wanted AJAX navigation without the verbosity of HTMX or the overhead of Turbo. It intercepts links and form submissions, fetches pages via AJAX, and swaps fragments of the DOM. Single tag, one call to `mu.init()`. No build step, no dependencies. Key features: patch mode (update multiple fragments in one request), SSE support, DOM morphing via idiomorph, View Transitions, prefetch on hover, polling, and full HTTP verb support on any element. At ~5KB gzipped, it's smaller than HTMX (16KB) and Turbo (25KB), and works with any backend: PHP, Python, Go, Ruby, whatever.…

    Mar 2026 · mujs.org · its alternatives →

22. 22
    FastDom – Lightweight replacement of React and MobX▲41

    Full reactivity JS/TS framework. Lightweight replacement of React + MobX + React Router. Very small and fast !! - PxyUp/Revact

    2019 · github.com · its alternatives →

23. 23
    CalDOM: An agnostic, reactive and minimalist JavaScript UI library▲107

    An agnostic, reactive & minimalist (3kb) JavaScript UI library with direct access to native DOM.

    2021 · caldom.org · its alternatives →

24. 24
    Sucrase, 20x faster smaller-scoped alternative to Babel▲88

    Super-fast alternative to Babel for when you can target modern JS runtimes - alangpierce/sucrase

    2018 · github.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 →