Collabtive is cloud based groupware easy and efficient for your projectsweb Collabtive is also a web-based collaboration software. It is an Open Source PHP groupware alternative for proprietary tools like Active Collab or Basecamp.

Features of Collabtive:
Core functionality
- Unlimited projects, milestones, tasklists, and tasks
- Unlimited members with user profiles
- Role-based permission management
- Messaging and instant messaging
- File management
- Timetracking
Reporting and notifications
- Timetracker reports, activity logs and messages in PDF format
- Export user profiles as vCard
- RSS feeds for messages and tasks
- Synchronization of calendars via iCal task export
- Excel files from activity logs and timetracker reports
- E-mail notifications
Other
- Search, tags
- Basecamp import
- Fully themeable
- Available in more than 30 languages
- Full UTF8 support

What's New in This Version:
- This is a bugfix release.