Collabtive is a web-based project management software. It provides a free, open source alternative to proprietary tools like Basecamp.
- Task lists
- Milestones
- Messaging / Instant messaging
- Calendaring
- File management
- Role-based user permissions
- Time tracking
- Reporting (Excel, PDF)
- Exporting (ZIP, XML, RSS, iCal)
- Multilingual interface