It might ask a little work to be completely integrated, but you should take a look at Jappix Mini (https://mini.jappix.com/). It's pure HTML/JS, and can be completely client-side.
If you need something more integrated - like SSO between Nuxeo and Jappix - it's going to be a little harder. But I'm quite interested if you succeed (didn't try yet). --- Mailing list: [email protected] Forum: http://forum.nuxeo.org/f/1/
