RationalPlan by StandBySoft is a powerful project management software designed as an affordable alternative to Microsoft Project. The application is covering project management area from WBS construction, project planning and scheduling to critical path management, overallocated resources detection, progress tracking, cost estimation, etc. Gantt chart support as well as various time line reports are also provided.

RationalPlan is a great alternative to Microsoft Project with some extra-features like multiproject management (only for Multi Project version). It offers you the most important capabilities of a good project management software while beeing able to operate on various platforms starting with Windows, Mac, Linux and all other Java enabled platforms.