XMind is a -based editor that has a few interesting features (such as Gantt charts) and a nice (if somewhat infuriatingly “social”) map sharing site associated with it.

A serious initial drawback was that it compounded the fact that it ran (or rather, crawled) under with an Eclipse-like look (which I hate), but that has been solved in recent releases.

Also, it can import files and now runs well on the Mac, Windows and iOS, so it has become my default.

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