1)   PlanBee project management planning tool 2.0e
Critical Path Project Management Planning tool. Inexpensive alternative to MS Project. Reports, PERT charts and Gantt charts may be either printed, or copied to the clipboard. Web page reports may be generated (Pro version).

 2)   GanttPV - Project Scheduling Software v0.6
Create project schedules. Plan assignments. Prioritize followup items. Calculate float. Display gantt charts. Manage workload.

 3)   AdeptTracker 2.20
AdeptTracker is a project planning tool with Gantt chart editor. As an alternative to MS Project, it can manage up to 10,000 project tasks with rich project filters; track Critical Path of subproject and milestone by using unlimited project baselines

 4)   GanttPV for the Mac v0.6
Create project schedules. Plan assignments. Prioritize followup items. Calculate float. Display gantt charts. Manage workload. Reuse template projects. Define keyboard shortcuts. Write scripts. Monitor productivity and out-of-pocket expenses.