Closure Compiler is a JavaScript optimizing compiler. It parses your JavaScript, analyzes it, removes dead code and rewrites and minimizes what's left. It also checks syntax, variable references, and types, and warns about common JavaScript pitfalls. It is used in many of Google's JavaScript apps, including Gmail, Google Web Search, Google Maps, and Google Docs.

XWiki Platform - Skin - Skin Extensions

Scala.js linker

Maven plugin to compress and merge resources like JavaScript and CSS files.

CometD :: JavaScript :: Common

MMBase Core

Viewer Commons

This is a minimalistic war containing the essentials for an MMBase web applications. This can be used as initial war overlay for your own project.

sbt 2 plugin: splice pinned JS into Scala.js linker output, no Node

Scala.js linker

WicketStuff Closure Compiler Integration