Dev tools · alternatives · 2026
24 alternatives to Theory.js – Abstraction layer for cross-platform JavaScript
Abstraction layer for cross platform JavaScript. Contribute to amark/theory development by creating an account on GitHub.
Theory.js is an abstraction layer designed to simplify cross-platform JavaScript development. It is for developers who want to write JavaScript code that runs consistently across different platforms without managing… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Theory.js – Abstraction layer for cross-platform JavaScript launched in 2013; newer entries below may have overtaken it.
- 1AI
2015 · jsblocks.com · its alternatives →
- 2

🥞Data Structures and Algorithms explained and implemented in JavaScript + eBook - amejiarosario/dsa.js-data-structures-algorithms-javascript
2019 · github.com · its alternatives →
- 3

Pts is a javascript library for visualization and creative-coding.
2018 · ptsjs.org · its alternatives →
- 4WP
2013 · usablica.github.com · its alternatives →
- 5

Hello HN! I'm the creator and solo developer of Extension.js, a development tool for browser extensions with built-in support for TypeScript, WebAssembly, React, and modern JavaScript. Developers use it to spend less time configuring the compilation config or learning new frameworks and more time actually writing code. Most projects similar to Extension.js rely on some sort of abstraction or configuration to get started, making the initial development process slow given the extra learning curve and setup guidelines. By using Extension.js, adding the package to your npm scripts is all it…
2024 · github.com · its alternatives →
- 6

Faster user-land reimplementations for several common builtin native JavaScript functions. - codemix/fast.js
2014 · github.com · its alternatives →
- 7
Blitz.js▲270Rails-like framework for React apps, built on Next.js
2020 · github.com · its alternatives →
- 8

clojure.spec for Javascript. Contribute to prayerslayer/js.spec development by creating an account on GitHub.
2016 · github.com · its alternatives →
- 9
TheoremJS▲167A Math framework for computation in JavaScript
2018 · theorem.js.org · its alternatives →
- 10TJ
2013 · saebekassebil.github.com · its alternatives →
- 11UT
Entire React code base explanation by visual block schemes (Stack version)
2017 · bogdan-lyashenko.github.io · its alternatives →
- 12

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 →
- 13

- 14TJ
2023 · totaljs.com · its alternatives →
- 15LA
2018 · layerjs.org · its alternatives →
- 16

:microscope: A JavaScript interpretation of the Ruby library Scientist, a library for carefully refactoring critical paths. - bugthesystem/scientist.js
2016 · github.com · its alternatives →
- 17

📦 Module thinking, principles, design patterns and best practices. - mjavascript/mastering-modular-javascript
2018 · github.com · its alternatives →
- 18WJ
2014 · gwendall.github.io · its alternatives →
- 19

We've been building Crust (https://crustjs.com/), a TypeScript-first, Bun-native CLI framework with zero dependencies. It's been powering our core product internally for a while, and we're now open-sourcing it. The problem we kept running into: existing CLI frameworks in the JS ecosystem are either minimal arg parsers where you wire everything yourself, or heavyweight frameworks with large dependency trees and Node-era assumptions. We wanted something in between. What Crust does differently: - Full type inference from definitions — args and flags are inferred automatically. No…
Mar 2026 · github.com · its alternatives →
- 20

## What is a multimethod?
2011 · krisjordan.com · its alternatives →
- 21

faster.js is a Babel plugin that compiles idiomatic Javascript to faster, micro-optimized Javascript. - vzhou842/faster.js
2018 · github.com · its alternatives →
- 22

IO.JS is a fork of the popular JavaScript platform Node.JS that aims to bring the latest enhancements in JavaScript to developers everywhere while encouraging collaboration and openness within community.IO.JS is pushing the Node.JS community into new te...
2015 · behance.net · its alternatives →
- 23

Classes for javascript that don't suck. Contribute to jneen/pjs development by creating an account on GitHub.
2012 · github.com · its alternatives →
- 24

Create and share simple web demos using TypeScript, CSS, and HTML. Prototype new ideas quickly.
2017 · codewich.com · its alternatives →
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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 →