jLiveID

jLiveID, a free library that provides an essential API to allow access to the Windows Live ID service from within Java applications. Windows Live ID (originally known as Microsoft Passport, then as .NET Passport, and then as Microsoft Passport Network) is the identity and authentication service developed and provided by Microsoft's Windows Live. jLiveID makes it possible for Java developers to create identity-aware applications and online services and offer personalized access to such applications' content to any of the millions potentially registered Windows Live ID users. jLiveID enables authentication (logon) into the Windows Live ID service and subsequent acquisition of Security Token.