EXCEL

Gantt-PERT

Project Charts

The Gantt chart was developed by Henry L. Gantt around 1910. The chart shows a project's status, but not how one task depends on another.

In the 1950's, the Navy developed PERT (Program Evaluation Review Technique) charts. A similar process is called the Critical Path Method (Analysis) or CPM (A).
The terms PERT, PERT/CPM, and CPM are often interchanged.

A PERT chart looks more like a flow chart than a graph.

BaRaN Sytems has some clear examples:
Project for Excel

Here's an example of a Gantt chart being constructed using an open source product called GanttProject :
Flash Demo

John F. Lacher has created a nice example of how to create a Gantt chart.
This one is appropriate for scheduling rooms, resources, and time.

A sample can be downloaded and customized.
Lacher24.XLS




Also see:
Gantt-type chart on a worksheet using conditional formatting

And

Microsoft Knowledgebase:
How to Create a Gantt Chart Using Hours as the Scale
Visual Basic Module to Create Gantt Chart
Track multiple projects with a Gantt chart

Jon Peltier:
Gantt Chart Links

SearchSmallBizIT.com:
PERT chart

You can use Microsoft Project to create PERT and Gantt charts.

For more affordable solutions, see:
Inexpensive project management tools


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