Free Project Management Software - Windows/Linux/Mac, Supports resource leveling/optimizer, parent/child task structures and familiar linking relationships. Flexible resource scheduling: multiple calendars, timezones, part-time and shifts. Calendar nesting, schedule inheritance and overiding are all supported. Fixed work and fixed duration task types. Drag and drop of resources and tasks. Overlay of Resource schedules on Gantt Chart, or overlay of tasks on Resource schedule chart. Full chart/table printing with adjustable scaling. Critical path and critical chain analysis with early/late - start/finish, start/finish float.