Computer Systems Odessa today announced the release of ConceptDraw Project 1.1, the latest version of its cross-platform software that enables Mac and PC users to effectively brainstorm, organize, and manage projects. ConceptDraw Project helps effectively manage projects of any size with Gantt charts, WBS charts and Mind-Maps. The key feature of version 1.1 is the customizable project calendar, which now lets users plan tasks for weekends and holidays.