ProjectLibre (previously known as OpenProj) is an open source alternative to Microsoft Project. It is compatible with MS Project 2003, 2007, and 2010. It also supports several languages.
Key features:
- Project Management software
- Compatibility with Microsoft Project 2010
- Microsoft Project replacement
- Gantt Chart
- PERT Charts
- RBS Chart
- Network Diagram
- An active online community
License: Freeware
Link : ProjectLibre