Well we've seen it here before - basically a Perldesk clone...
Client Area Features
o Multiple Language Support
o Ability to assign a priority for the request
o View support request history
o Flood Prevention for incoming emails, this only allows a user to submit a request every x seconds.
o Searchable Knowledge Base (managed by staff members) this will be tied into a FAQ manager we have
* Staff Area Features
o Performance Tracking, staff members can view the % of calls they have closed
o Rating Performance, users can rate how helpful a staff member was allowing satisfaction reporting in the administration
o Private Staff notes can be set on help desk requests, so that users cannot view them
o Assign requests to other departments or staff members
o Staff Members can view/attach files when responding to user requests.
o Easy call display, showing Emergency, new and open requests
o Predefined response templates
o Knowledge Base management - tie into a FAQ Manager we have
o Ticket notifications
* Administration Area Features
o Change layout via the template editor
o User Management, including the ability to create user accounts
o Manage Staff, view staff members performance and response time
o Ticket Overview
o Create an unlimited number of support categories
o E-mail All Users
o E-mail All Staff Members
o Search Customers
o View online/active staff members
o Customize the whole design via the templates very easily
o Edit the email response templates