PERT charts, on the other hand, are a bit less rigid in their design – usually, they’re loose diagrams or flow charts. Unlike traditional Gantt charts, a PERT chart typically displays tasks in ...

PERT charts, while also including project tasks and time allocation, display dependency. Gantt charts are easier to change as a task moves along and it comes closer to completion.

In addition, those who create PERT charts can now zoom in one them, display subtasks, change the color and shape of objects and create new objects by command-dragging.

Many years ago, I wrote a very simple project management system that did PERT and Gantt charts on Windows 3.1. It was mostly an exercise for me to learn object-oriented programming on Windows, so ...