GLPI is the Information Resource-Manager with an additional Administration- Interface. You can use it to build up a database with an inventory for your company (computer, software, printers...). It has enhanced functions to make the daily life for the administrators easier, like a job-tracking-system with mail-notification and methods to (...)
This is the online demonstration of GLPI.
Some functionalities are unavailable due to security issues (users management, password changes, database backup and restore...)
Nevertheless, that should enable you to have an outline of what is GLPI.
For the administator login :
Login : admin_en
Pass : admin
For the normal login (no attribution of tasks):
Login : normal_en
Pass : normal
For the post-only login :
Login : post-only_en
Pass : postonly
You could try GLPI and use the Forum to give us your opinion.