There are actually a number of server side JS runtimes, but node.js (or nodejs or NodeJS, the naming is semi-inconsistent) has the most buzz/momentum. I'm conf

There are actually a number of server side JS runtimes, but node.js (or nodejs or NodeJS, the naming is semi-inconsistent) has the most buzz/momentum. I'm confident that you'll see a number of frameworks/libraries that can take advantage of JS running both client and server sdie in time for JSConf in April. The most public has been Yahoo's YUI team, with Dav Glass putting the effort into getting yui3 running in node. Dav did a video presentation on yui3 in node: http://www.yuiblog.com/blog/2010/09/29/video-glass-node/ http://www.yuiblog.com/blog/2010/09/29/video-glass-node/ IMO the most useful example/demo in the talk is screen scraping digg: http://github.com/davglass/nodejs-yui3/blob/master/examples/scrape.js http://github.com/davglass/nodejs-yui3/blob/master/examples/... He also provides examples of various yahoo widgets getting rendered as static html, which I think is also in that github repo, but I can't find his demo online. I'm also working on putting a bunch of pieces together that would allow an app to be client/server agnostic but I've been "working on it" for months now in the background and I'm not finished so I'll just wait until I'm done to talk about it.