When comparing MindManager vs Scapple, the Slant community recommends Scapple for most people. In the question“What are the best mind mapping tools for Mac?” Scapple is ranked 2nd while MindManager is ranked 7th. The most important reason people chose Scapple is:
You can customize your styles, background and font as you wish.
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Pros
Pro Integrates with a good variety of tools
MindManager integrates with MS Office applications (Excel, Outlook, Word, SharePoint), Box.net and many other tools.
Pro Real-time Gantt charts
Data can be represented as a map and as an outline simultaneously.
Pro Customizable
You can customize your styles, background and font as you wish.
Pro Flexible
It gives you the freedom to use visual thinking without the hierarchical rigidity of a mind map.
Cons
Con Odd UI interaction conventions
Some conventions used to interact with the software are either questionable or simply going against what's commonly accepted. For example, right-click + drag will move around, holding down the right-click will open up the context-menu and left-click in an open space will start a new unconnected node. What this results in is constant accidental opening of context-menu then accidental creation of a new node trying to get out of the context-menu.
Con It looks abandoned
Despite being a great software as it is, theres no update for more than a year : either to fix minor bugs, or implement new functions.