This group <a href="http://groups.google.com/group/serverjs" rel="nofollow">http://groups.google.com/group/serverjs</a> (kicked off by this post: <a href="http://www.blueskyonmars.com/2009/01/29/what-server-side-javascript-needs/" rel="nofollow">http://www.blueskyonmars.com/2009/01/29/what-server-side-jav...</a> ) is working on a cross-interpreter standard library, a module system, etc. It just started last week, but people from many of the major server side (and some client side) JavaScript projects are already involved. If you're interested in helping out, take a look.