I use <a href="http://plnkr.co" rel="nofollow">http://plnkr.co</a> and apart from the outrageous amounts of memory it can consume it's pretty good.<p>Features I like about Plunker:
- Multiple files
- Great code editor (ACE)
- Streaming collaboration mode (so others can follow along)
- Versioning<p>Features I want:
- Test endpoints (echo and/or redirect to a resource would be fine)
- Github integration: able to save and load assets to and from github
- Add Javascript librarie references from CDN (jsbin does this best)
- Unit test support (some do this but it could be better)
- Easily self-hosted for use on an offline laptop
- Mobile previews
- Better search (find me all the fiddles/plunks that include calls to angular.extend)<p>OK, I want these things to turn into lightweight IDEs and REPLs.