SpiderScribe.net 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.
License: Free Personal
SpiderScribe.net is primarily focused on mind mapping and brainstorming, making it user-friendly with real-time collaboration features. In contrast, Lucidchart offers advanced diagramming capabilities with a vast shape library, catering to more complex diagramming needs.