guidance sought for hybrid HTML5 WebApp / CouchApp

[Miles F]

Hi Folks,

I'm looking at building a data management application that's
essentially a hybrid of an HTML5 WebApp (taking advantage of the App
Cache and local data storage for disconnected operation) and a
CouchApp (doing fancier stuff, data sharing, replication, etc. on one
or more server-side CouchDB installations). If you think of a
collection of linked spreadsheets - where each spreadsheet "lives" in
CouchDB, but can be cached, viewed, edited in-browser when
disconnected - you won't be far off.

My questions: Are there any good examples of applications that are
already doing this kind of thing? Are there any good frameworks or
libraries that I should be focusing on?

Thanks very much,

Miles Fidelman