Sorry, this is not online MindNode but my recommendation. :P
MindNode and MindNode Pro are elegant and simple-to-use mindmapping applications for Mac. Yes, simple-to-use. That is the most important consideration but most other applications appears not. I can add some nodes and branches, OK, it's good. Adding more, well, not bad. And more nodes, more branches, this needs to be moved there, those must be reversed, ... etc. Oh? how can I arrange this map? MindNode and MindNode Pro don't bother you with confusing terms nor inventive UI. What you see is what it is, and as you expect, MindNode works. I strongly recommend all of you who visited this site MindNode and MindNode Pro, which are the best mindmapping tools. Simple is best.