[asymptotic]

If you're on Mac just create a sparse encrypted DMG using Disk Utility, put it into Dropbox, bam you're done. http://blog.fosketts.net/2011/07/05/mac-dropbox-encrypted-vo...

I prefer applications to focus on one thing and do it very well, and leave other orthogonal functionality to other applications or the OS to then do the other parts very well. In this respect Quiver is well designed, I tip my hat to the author.

[elcapitan]

Or a Truecrypt image across all systems.

[elcapitan]

Why exactly was this downvoted?

[mercer]

I suppose because, at least last I heard, Truecrypt is not actively supported anymore. Not sure if that's enough reason to downvote, but this might explain it.