The man‘s a madman. I can’t even keep up with him. Oh, a snippet from his thorough explanation:
I’ve finally finished; dojo.storage is now done, in beta, and fully open source under a business-friendly BSD license.
…
The offline and dojo.storage work together, because whether you are offline or online you can access the same persistent storage, saving data while offline then syncing when online. Expect a dojo.offline and dojo.sync in the future that will provide abstractions for common operations like this. I’m looking for financial sponsors on this if you are interested.
(Emphasis mine).
Factory Joe 
Thanks for the pointer Chris! How was Bangalore? Did you get to play with Moxie?
Best,
Brad
Sure thing — nice work!
Bangalore was awesome — totally great time.
And no, not yet, but I’ll take a look!
Almost exactly a year later from this blog post, the Dojo Offline and Dojo Sync portions have arrived! See http://dojotoolkit.org/offline for details.
Best,
Brad
Oh, and SitePen ended up being that financial sponsor and collaborator on Dojo Offline!