IdeaTree is an on-line mind-mapping and knowledge-mapping application which has decision-making/voting features that I don’t  believe exist – in that combination – in any other application.

And – on first use – it’s pretty easy to use. Worth consideration for the planning and problem-solving toolbox. And likely a good way to substitute for certain types of on-line meetings, in-person meetings and for the “infinite email round robin” we’ve all participated in.