Camlistore – open-source personal storage system for life (camlistore.org)

You might also find this interesting: http://onemodel.org : a way to manage all/arbitrary knowledge "atomically".

The web site has a similar feel with different but partly overlapping goals.

I started using it today and seems nice and lean. The only problem I have is the amount of projects trying to fix data permanence.

IPFS Tent BigChainDB etc.

Right now I'm starting to use camilstore, what if in the future I want to move to another project? I hope there will be tools to do help with migration. See: http://indiewebcamp.com/monoculture