Whozat is a Java web application that allows third-parties to apply for and be granted access to identity information stored within directory servers (i.e. LDAP) and other data-sources (i.e. databases).

Access is granted based on a key/secret key and a specific I.P. address. SOAP and REST web services are provided. These return XML documents that contain the relevant identity data. On the server identity lookups can be cached for an identified amount of time in order to reduce load on back-end directory services. More than one directory service can be exposed by a Whozat service.

The Whozat-Client library is a very simple Java library for performing Whozat server queries. The Spring Framework is used throughout to enable easy yet flexible configuration.