What is Camlistore?

Camlistore is:

a way to store, sync, share, model and back up content
a work in progress
Open Source (Apache licensed)
an acronym for "Content-Addressable Multi-Layer Indexed Storage", hinting that Camlistore is about:
- content-addressable storage
- separate interoperable parts (storage, sync, sharing, modeling), with well-defined protocols and roles
your "home directory for the web"
pro-JSON (yet aggressively format agnostic)
pro-OpenPGP (for signing claims)
pro-paranoia and privacy
ambitious, but ...
simple!
programming language-agnostic (parts and different implementations in Go, Python, Java, Perl, Bash, ... the language doesn't matter.) What matters is well-defined, simple HTTP interfaces.
neither "Cloud" nor "Local". happily both.
a "20% project" from a few Google employees, but not Google-centric nor endorsed by Google (other than them letting us open source our side project)
ready for developers (at least those without strong color preferences)

but, is...