I want to…

Compile a WebAssembly module from…

(This list is in alphabetical order.)

• Ada
• AssemblyScript (a TypeScript-like syntax)
• C/C++
  • starting from scratch
  • library that I want to port to the Web
• C#
• Cobol
• D
• Dart
  • via Flutter
• F#
• Go
  • with full language support
  • targeting minimal size
• Grain
• Haskell
  • GHC WebAssembly backend
  • Asterius
• Java
  • TeaVM
  • j2wasm
  • GraalVM Web Image
• Kotlin
• Lua
• Moonbit
• Pascal
• PHP
• Python
  • Pyodide
  • Nuitka (py2wasm)
  • Pygbag (This is based on python-wasm, but mentioned separately because it gives pygame support)
• R
• RemObjects Elements
• Ruby
• Rust
• Scala.js
• Scheme
• Swift
• Zig

Use the compiled WebAssembly…

• from JavaScript code
• as a CLI application
• from Node.js (with access to system resources)
• from Java code

Inspect WebAssembly…

• with Chrome DevTools
• with GDB/LLDB
• as a disassembled format
• as a human-readable pseudo-code

Something missing?

Coming from a language or targeting an environment not listed here? Please raise an issue!

Getting Started