Structnet recommends some tools that help the program explain, build, and maintain their schedule.  The following are some of those tools we use.

Microsoft Project. the standard for project scheduling.

MindManager from Mindjet. highly visual, easily tuned & linked thinking tool. Fantastic for Organizational chart & network diagrams etc. Its ability to reorganize your arrangement with little training & effort is key.

Pert Chart Expert.

WBS Chart Pro.

SketchUp Pro. 2d & 3d drawing software for the masses. easily communicate your drawing ideas.

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AzTech International: Test software for project schedules