Cybernetically enhanced web apps
Application-scale JavaScript
A web component compiler for building UI components
A markdown parser and compiler. Built for speed
The zero configuration build tool for the web
Python 3.7 to JavaScript compiler
Build Windows desktop applications using PHP, Javascript, CSS & HTML
Haskell to JavaScript compiler, based on GHC
A Haskell to WebAssembly compiler
Python in the Browser
Traceur is a JavaScript.next-to-JavaScript-of-today compiler