Table of Contents
To make a long story short: moregroupware is a web-based groupware application.
Some of the features that are worth being mentioned:
Contact/address management
Webmail
full-featured Calendar
ToDo management
News
Project management
Some preferences for each module
Skins based on Cascading Style Sheets
The best thing is: it's free. The software is available as free software, complete with source code.