If you’ve ever found yourself needing to assemble a graph, floor plan, diagram, or any other visual element to your site, Gliffy might just be the answer you’re looking for. It is a free web-based application that allows you to easily assemble a visual aid without any of the fuss normally associated with productive applications. Best of all, it’s free to try.
You have the ability to make 5 graphs with their free account, with the chance to upgrade to unlimited private and public graphs for five dollars per month. That catch aside, it is a notable site worth taking a look at if you’re ever in the need to create a graph or other visual aid.