When Visio is Overkill

Gliffy is a great web based diagramming tool. If you've ever tried to use Microsoft Visio and found it to be way to complicated or overkill for a quick diagram, give Gliffy a shot. Its free and includes standard shapes as well as UML, flow chart, floor plan, and network templates that you can use. You can save diagrams right on the website or export to JPEG, SVG, or PNG.