Life & fun · alternatives · 2026

This tool converts C# code into JavaScript using Microsoft's Roslyn compiler. It allows developers familiar with C# to write code in that language and have it automatically translated for use in web environments. The… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. C#-to-JavaScript compiler powered by Microsoft Roslyn launched in 2015; newer entries below may have overtaken it.

1. 1IW
   I wrote a .NET to JS compiler. Here's an XNA demo compiled to JS.▲103

   2011 · hildr.luminance.org · its alternatives →

2. 2CC
   Convert C#/VB into Hyperlinked, Static HTML – Powered by Roslyn▲44

   2015 · sourcebrowser.io · its alternatives →

3. 3
   DuoCode▲73

   C#-to-JavaScript compiler

   2015 · duoco.de · its alternatives →

4. 4
   How to write a tiny compiler▲224

   Write your own compiler: introduction. Code genetation. AST. Abstract syntax tree. lisp. javascript.

   2017 · blog.klipse.tech · its alternatives →

5. 5JP
   JavaScript Program Synthesis▲139

   2021 · grgv.xyz · its alternatives →

6. 6
   Lisp in C#▲144

   a custom Lisp. Contribute to codr7/sharpl development by creating an account on GitHub.

   2024 · github.com · its alternatives →

7. 7
   An experimental Python to C#/Go/Ruby/JS transpiler▲14

   a restricted python to javascript / c# / go / ruby compiler - pseudo-lang/pseudo-python

   2016 · github.com · its alternatives →

8. 8
   Jaws – a JavaScript to WASM ahead-of-time compiler▲290

   I've open sourced a JavaScript to WASM compiler. It's an experimental tool, but given the semantics I already implemented, I'm fairly certain I am able to eventually cover 100% of JavaScript spec. Any ideas, questions or critique welcomed! If you are interested in WASM, especially with new proposals like WASM GC or exception handling, it might be a good source of seeing these features in action - the project has a few thousand lines of hand written WAT so far.

   2024 · github.com · its alternatives →

9. 9
   FUNCTION12▲468

   Design-to-code automation tool

   2022 · fn12.com · its alternatives →

10. 10
    Joy – a Go to JavaScript compiler▲201

    Matt Mueller's personal website for sharing what I've learned about programming, design, entrepreneurship and life.

    2017 · mat.tm · its alternatives →

11. 11MT
    My Turbo Pascal compiler in JavaScript▲101

    2013 · teamten.com · its alternatives →

12. 12PC
    Pure CSS/HTML C# syntax highlighting without JavaScript▲53

    C# to HTML converter

    2022 · csharp-colors.xyz · its alternatives →

13. 13
    Automated algorithm translation for Python, C++, C#, JS▲142

    transpile algorithms/libs to idiomatic JS, Go, C#, Ruby - GitHub - pseudo-lang/pseudo: transpile algorithms/libs to idiomatic JS, Go, C#, Ruby

    2016 · github.com · its alternatives →

14. 14TF
    Transcrypt – Fast, small Python 3.5 to JavaScript transpiler▲121

    The Transcrypt Python to JavaScript compiler makes it possible to program lean and fast browser applications in Python. Transcrypt applications can use any JavaScript library and can also run on top of Node.js or be used in combination with Django.

    2016 · transcrypt.org · its alternatives →

15. 15AC
    a compiler from Python syntax to JavaScript syntax (like CoffeeScript)▲32

    2010 · pyxc.org · its alternatives →

16. 16
    6to5 – Turn ES6 code into vanilla ES5 with source maps and no runtime▲48

    🐠 Babel is a compiler for writing next generation JavaScript. - babel/babel

    2014 · github.com · its alternatives →

17. 17
    C# compiler with Go-like tooling (build small/standalone/native apps)▲14

    C# as you know it but with Go-inspired tooling (small, selfcontained, and native executables) - bflattened/bflat

    2021 · github.com · its alternatives →

18. 18
    Compiling C in the browser using WebAssembly▲174

    We’ve reached a major milestone in making any software run with WebAssembly. Thanks to the newest release of Wasmer (4.4) and the Wasmer JS SDK (0.8.0) ...

    2024 · wasmer.io · its alternatives →

19. 19WG
    Write Go code in JavaScript files▲158

    I built a Vite plugin that lets you write Go code directly in .js files using a "use golang" directive. It compiles to WebAssembly automatically.

    Oct 2025 · npmjs.com · its alternatives →

20. 20
    Auto-generate vanilla JavaScript alternatives for jQuery methods▲137

    Automatically finds jQuery methods from existing projects and generates vanilla js alternatives. - sachinchoolur/jquery-to-javascript-converter

    2021 · github.com · its alternatives →

21. 21AC
    A complete Bash parser in JavaScript transpiled from Go▲89

    2018 · npmjs.com · its alternatives →

22. 22
    CLJS Fiddle – ClojureScript▲82

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

    2016 · cljsfiddle.com · its alternatives →

23. 23ID
    I designed a language for code golf, compiling to Common Lisp▲102

    2013 · rhoscript.com · its alternatives →

24. 24
    Compiler Fundamentals – Closure Conversion▲70

    Closure Conversion. GitHub Gist: instantly share code, notes, and snippets.

    2019 · gist.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 →