idiomatic Clojure client for Riak built on top of the Riak Java driver

Could be a nice Dropbox replacement someday.

"a highly-available, completely consistent store for small amounts of extremely important data"

"simple, reliable, mid-scale p2p messaging and storage"

"offers a Scala interface to using CouchDB"

"an open source cloud-based column store [...] The system will reuse a lot of the components from LucidDB, but will involve new ones as well"

"The World's Most Secure USB Flash Drive with Internet Protection Services"

Highly rated on Yelp, for what that's worth.

"a distributed key-value storage system" ... "used at LinkedIn for certain high-scalability storage problems where simple functional partitioning is not sufficient". In the near future, it will be standard practice to deploy every high-traffic web application with a relational database, a document database, and a DHT like this.

"a distributed network file system designed to provide excellent performance, reliability, and scalability"

"store some tiny data in a tiny url"

use S3 as a powerful file system from EC2