[perneto]

I've long been thinking that something like Coda (the distributed filesystem from CMU) would be the best option in this space. Coda keeps the data, but lets nodes locally sync some of it for offline use. It's been around ages, too. Has anyone thought about it too?

[lux]

That's pretty much what ZumoDrive is doing too. It's offline, but you set how much of a local cache for recent/frequently used files you want, which makes it feel local for cached files (because it is :).