Life & fun · alternatives · 2026

24 alternatives to multimethod.js - a Clojure-inspired multimethod library for JavaScript

## What is a multimethod?

multimethod.js is a JavaScript library that implements Clojure-style multimethods, a functional programming approach to polymorphism. It allows developers to dynamically dispatch function calls based on custom logic… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. multimethod.js - a Clojure-inspired multimethod library for JavaScript launched in 2011; newer entries below may have overtaken it.

1. 1
   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 →

2. 2
   js.spec, a JavaScript implementation of clojure.spec▲96

   clojure.spec for Javascript. Contribute to prayerslayer/js.spec development by creating an account on GitHub.

   2016 · github.com · its alternatives →

3. 3
   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 →

4. 4GJ
   G9.js – Automatically Interactive Differentiable Graphics▲237

   2016 · omrelli.ug · its alternatives →

5. 5CP
   Clojure parser and core library in JavaScript, live on CodeCombat▲57

   2014 · vickychijwani.github.io · its alternatives →

6. 6AJ
   A Javascript library to overcomplicate Five▲69

   2014 · jackdcrawford.github.io · its alternatives →

7. 7MI
   My Interactive ClojureScript book▲134

   An interactive book introducing programming with ClojureScript

   2017 · langintro.com · its alternatives →

8. 8
   Crudlet.js – A common, streamable interface for synchronizing data▲94

   utility library for async iterable iterators. Contribute to crcn/mesh.js development by creating an account on GitHub.

   2015 · github.com · its alternatives →

9. 9
   Umbrella JS, a 2.5kb jQuery alternative▲132

   :umbrella: Lightweight javascript library for DOM manipulation and events

   2018 · umbrellajs.com · its alternatives →

10. 10
    Minified.js – a fully-featured, 4K alternative to jQuery and MooTools▲158

    2013 · minifiedjs.com · its alternatives →

11. 11
    libmodulor – An opinionated TS library to build multi-platform apps▲51

    Initially I started building this for my own projects. The main goal was to define a unified "blueprint" allowing me to develop multi-platform apps using the same code, without code generation. I wanted to be able to develop the same functionality on web, desktop, cli, server, mobile, whatever... I've been able to achieve this by relying on TypeScript, a 4-layer architecture (UseCase => App => Product => Target) and dependency injection. This mechanism allows me to use whatever tech stack I want, provided the good adapters are developed. For instance, I have pre-built ones : node express…

    2025 · github.com · its alternatives →

12. 12
    particles.js▲113

    A lightweight JavaScript library for creating particles.

    2014 · vincentgarreau.com · its alternatives →

13. 13CD
    Clojure DSL for pattern-matching, parsing and generic programming▲204

    2012 · scattered-thoughts.net · its alternatives →

14. 14
    ES7 Decorator library adds types checking, memoization, and more to JS▲66

    JS Decorators library. Contribute to mako-taco/DecorateThis development by creating an account on GitHub.

    2015 · github.com · its alternatives →

15. 15WJ
    Way.js – Simple, persistent, framework-agnostic two-way databinding▲162

    2014 · gwendall.github.io · its alternatives →

16. 16
    Advanced Mathematics Library for Node.js and JavaScript▲123

    Advanced Mathematics Library for Node.js and JavaScript - numbers/numbers.js

    2012 · github.com · its alternatives →

17. 17
    C++11 inline object definitions▲70

    Meta programming utilities for C++14. Merged in matt-42/lithium - matt-42/iod

    2014 · github.com · its alternatives →

18. 18AJ
    Algebra.js – Build, display, and solve algebraic equations▲132

    2015 · algebra.js.org · its alternatives →

19. 19
    Combinatorics.js – Combinatorics JavaScript Library▲25

    2015 · github.com · its alternatives →

20. 20
    CLJS Fiddle – ClojureScript▲82

    A private, browser-only ClojureScript playground powered by the self-hosted compiler.

    2016 · cljsfiddle.com · its alternatives →

21. 21
    Theory.js – Abstraction layer for cross-platform JavaScript▲28

    Abstraction layer for cross platform JavaScript. Contribute to amark/theory development by creating an account on GitHub.

    2013 · github.com · its alternatives →

22. 22
    Classes for javascript that you'd actually use▲52

    Classes for javascript that don't suck. Contribute to jneen/pjs development by creating an account on GitHub.

    2012 · github.com · its alternatives →

23. 23
    A Fast, Malloc-Free C++14 Json Parser and Encoder▲98

    Meta programming utilities for C++14. Merged in matt-42/lithium - matt-42/iod

    2014 · github.com · its alternatives →

24. 24
    Frpjs – Functional reactive programming library for JavaScript▲36

    Functional Reactive Programming Library for JavaScript - santoshrajan/frpjs

    2016 · 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 →