"AnswerGarden is a new minimalistic feedback tool. Use it as a tool for online brainstorming or embed it on your website or blog as a poll or guestbook."
"SpiderScribe is an online mind mapping and brainstorming tool. It lets you organize your ideas by connecting notes, files, calendar events, etc. in free-form maps. You can collaborate and share those maps online!"
This is another great website for students and teachers to create digital stories. It has a set of tools to fire out ideas, mix them, and make quick decisions.
Realtime Board is a free tool for hosting online, collaborative brainstorming sessions. Realtime Board provides a blank grid on which you can type, draw, and post pictures. You can connect elements on your boards through a simple linking tool. The boards that you create on Realtime Board can be shared publicly or privately. To help you communicate with your collaborators Realtime Board has a chat function built into every board.