Hermes - Pandora Client for OS X
Facebook Ad Hunter - Facebook Ad Hunter uncovers hidden audiences to target when running Facebook Ads.
Pithos - pithos is a daemon which provides an S3-compatible frontend for storing files in a Cassandra cluster.
Grade My Ads - Score your Facebook ads + improve them, in seconds.
M for iOS - Email app with automatic encryption
InterestExplorer - Discover 1000's of hidden Facebook interests to target.