ITIL Toolkits
Service Catalog Template
Found this template in the itsm community .org site and found it very useful as a base line for a Service Catalog implementation. Nevertheless, as anything in Service Management each one must adjust it to his reality, and definitely does not released us from an ITIL reading.
http://www.itsmcommunity.org/downloads/Service_Catalog_Example.pdf
OGC
http://www.itil-toolkit.com/
Pink Elephant
https://www.pinkelephant.com/en-US/AboutPink/PinkNews/082409.htm