IRMA is the only one that comes to mind:
http://irma.incubus.de/

Search freshmeat as always, searching for helpdesk may be more lucrative
than resource management.

--
Andy Zbikowski, Sys Admin   | (WEB) http://www.ltiflex.com
LTI Flexible Products, Inc. | (PH)  763-428-9119 (EX) 132
21801 Industrial Blvd       | (FX)  763-428-9126
Rogers, MN  55374           | (PCS) 612-306-6055