When comparing Mindjet MindManager vs Xmind, the Slant community recommends Xmind for most people. In the question“What are the best mind mapping tools?” Xmind is ranked 1st while Mindjet MindManager is ranked 2nd. The most important reason people chose Xmind is:
XMind's interface is uncluttered and easy to overview. It allows for quick, intuitive navigation and use. For example, Enter adds more items to a node, Tab adds a child node, all commonly used shortcuts works as expected, etc.
Specs
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Pros
Pro MS Outlook strong integration
Pro Excellent team collaboration support
Pro Cross-platform desktop and mobile, and web versions available
Works on Windows, OS X, iOS, Android and Web.

Pro Business oriented
Business oriented, mind maps look professional.
Pro Integrates with multiple web services
Pro Real-time Gantt charts
Pro MS Projects and Sharepoint integration
Pro Clean, easy to use UI
XMind's interface is uncluttered and easy to overview. It allows for quick, intuitive navigation and use. For example, Enter adds more items to a node, Tab adds a child node, all commonly used shortcuts works as expected, etc.
Pro Free and open source
XMind, except for Plus and Pro features, is open source with code available on GitHub.
Pro A wide variety of templates available
XMind has preset templates available that allow getting started quickly. There are templates for project planning, status reports, dashboards, organizational charts, swot analysis, timelines, decision trees, weekly plans, among others.
Pro Extremely flexible
XMind is capable of displaying information in a multitude of ways (classic mindmaps, charts, timelines, decision trees, etc), it can add labels, clip-art, notes, files, audio recordings, it can then take the project and export it in a variety of ways including an synced gantt chart.
Pro Built-in Gantt view
XMind has a build-in Gantt chart view and with the pro version, XMind allows synchronizing it.
Pro Can copy entire hierarchy to/from Word with a simple copy/paste action
XMind allows quickly copying over structure of the mindmap as a tab-indented list starting at the node selected. It can also take a tab-indented list and create a mindmap from it.
Pro Task management (pro)
Pro Very good performance
The app is incredible complete, flexible, and fast.
Pro Cross-platform
Works on Windows, OS X and Linux.
Pro Local Network Sharing
Pro XMind Plus & Pro adds more export options
XMind Plus & Pro can export to Word, PowerPoint, PDF, SVG & MindManager.
Pro Audio recording (pro)
Cons
Con Mac version has severely limited functionality
Con Lacks elegant ability to be able to connect ideas in the reverse order or different direction
This isn't uncommon, but there are mind mapping software that will let you connect a number of ideas that branched off from one idea, back to one idea again. Usually the branching analogy of the details getting more as you go further away from the main branch works, but occasionally it is nice to map multiple ideas back to a single idea or loop back to a previous idea. This can be done with connections, but if you want to see something that gives true freedom, look at the examples of the application Coggle.
Con Very expensive compared to all other alternatives
Not really viable for personal mind mapping, as the high cost clearly targets the business market.
Con No free/personal version
It is has so many great features, but this comes with the pricetag of the only version of this software. A lighter version, with many advanced business features removed would be ideal for a free/freemium version
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 Expensive
Con No offline capability
If the Internet goes down, you cannot use this XMind. This is painful on the iOS phone where data link must be online before you can use it.
Con Newer versions become heavyweight and bloated
Even though there are more features, starting with version 8 application is very unstable. A lot of users still prefer version 7.5 or 6.5.
Con Used to offer their NOT-free products
Con FreeMind files sometimes don't work
XMind claims it can read FreeMind files, but certain .mm file saves from Freeplane or MindMup generate an error on open.
