Flowcharting online without Visio or Omigraffle

The web has come a long way baby. You don't need "fancy" software from Microsoft or OmniGraffle to make flowcharts, diagrams, and the like. Now you can use online tools such as the Flash-based Gliffy or the css and html, ajaxio. Both are very cool.

From a List of nifty tools for drawing diagrams, charts and flow-charts (Vitaly Friedman's Notebook).