"Cloud Kite (formely Open Drive) is a collective encyclopedia project based on Cloud public files and on the cloud sharing, cloud sourcing and cloud-solving principles. Cloud Kite is designed to provide free reusable professional and educational contents."
OpenSocial is a set of common application programming interfaces (APIs) for web-based social network applications, developed by Google along with MySpace and a number of other social networks.
The web is better when it's social.\nFriends are fun, but they're only on some websites. OpenSocial helps these sites share their social data with the web. Applications that use the OpenSocial APIs can be embedded within a social network itself, or access a site's social data from anywhere on the web.