TUTOS is a tool to manage the the organizational needs of small
groups, teams, departments.  To do this it provides some web-based
tools:

a calendar for users and groups
address manager for people, companies and departments
bug tracking system
product/project repository
   with task management
   with document management
   with installation management
   support of different roles
   support of relations to other projects (base product, subproject etc.) 
mailboxes (imap/pop) 
timetracking on projects, installations and bugs 
Invoices 
Watchlists. Stay informed on changes on projects/bugs etc via email. 
support for teams that are distributed over different timezones 
fine grained permission handling 
change history 

All these parts are heavily linked together to give a unique interface
for the day to day needs of people involved in project management and
development.