Free Diagramming Tool

I am teaching an MBA course this semester and next week we are going to discuss the affect information technology has the workflow in an organization.  As part of this discussion, we will begin using process flow diagrams to map current and proposed workflow.  We will use diagramming software to develop these process flow diagrams.  The problem is that Microsoft Visio is not installed on our classroom computer and many students don't have access to this software on their own computers.

I recently came across a great replacement for Microsoft Visio to address situations like this where Visio is not available.  A free web-based tool named Diagramly (http://www.diagram.ly/) supports several forms of diagrams, including process flow diagrams, and can be accessed through a browser and Internet connection.  While the tool is not as polished as Visio, it certainly gets the job done.  This tool will be great to share with the class and will allow them to develop their own models for their final project in the class.