OpenSocial is a public specification that defines a component hosting environment (container) and a set of common application programming interfaces (APIs) for web-based applications. Initially, it was designed for social network applications and developed by Google along with MySpace and a number of other social networks. More recently, it has become adopted as a general use runtime environment for allowing untrusted and partially trusted components from third parties to run in an existing web application. The OpenSocial Foundation moved to integrate or support numerous other open web technologies. This includes OAuth and OAuth 2.0, Activity Streams, and Portable Contacts, among others.