AnswerGarden is a minimalistic feedback tool. Use it as a tool for online brainstorming or embed it on your website or blog as a poll or guest book.
Cacoo is a user friendly online drawing tool that allows you to create a variety of diagrams such as site map, flowchart, mind map, wire frame, UML diagram and network diagram. Cacoo can be used free of charge for up to 6 free sheets.
Create professional-quality flowcharts, organizational charts, UML diagrams, network diagrams, wireframes, technical drawings and more. Gliffy works directly in your browser, no downloads necessary. Free account allows 5 public diagrams, no private ones.
Lucid charts redesigns the entire diagramming process to make it as easy as possible. Make flow charts, wireframes, mind maps, and organization charts.