Who ever worked as projectmanager on more comprehensive website projects can not really survive without flowcharts and blockdiagramms. A widespread software for generating diagramms is Visio by Microsoft. Visio Standard 2003 costs USD 199 and for freelancers who only need flowcharts on and off a bit expensive.

Gliffy to the rescue. Gliffy offers diagramming in your web browser without downloading additional software and it is very similar to Visio. Currently the Gliffy team plans to offer two versions of Gliffy:

• Free, ad supported Gliffy with limited feature set
• Subscription version of Gliffy with premium features for the business user

Test it!