In addition to the list Srini has shared, I'm not sure If we can also
demonstrate some GPL or Community based applications which can be used in
Office like
** OpenOffice
** Project Management (phpProject)
** CRM
** Resource management for Conference Room Booking System
** Document Management Systems (openKM)
** Learning Systems (Moodle)
** Pentaho BI Suite
** Defect Trackers (BugZilla)
** Security tools
regards
Siva.