Umlaut

Umlaut is OpenURL link resolving middleware that adds functions and services to commercial link resolving software such as SFX.

The services also is capable of aggregating third party "know item services" and sharing them with other services such as the library catalog or federated search tool. Umlaut uses WorldCat Identities by extract metadata from the OpenURL or other services and sending it to WorldCat Identities to find more items by the author of the item being viewed.