• node.js — various modules (RPC, MQ)
  • NowJS
• ape-project
• do their own internal source-to-source compiling, targetting JS
  • Fun
  • Ur
  • websharper
  • mobl
  • E
  • sugar
  • opa
  • more (see section "tierless")
    • even among the others listed there, they can often be used to 1) run the source language server-side, as-is, and 2) transcompile the server-side language to Javascript. This allows the same language to be used for both server and client.