DroidPlane is a mind mapping application for Android. It allows you to open FreePlane  and FreeMind  documents on your Android device. DroidPlane is optimized for large mind maps with many thousand nodes. The map is not displayed in the conventional format, but as a navigable tree. This makes it possible to browse through large mind maps on relatively small screens.
Files can be opened directly from Dropbox or any other file manager. At the moment, it is only possible to open files read only. Editing mind maps is not yet possible.
The application is in a very early state right now. Please send me an email to [email protected]
if you have wishes, suggestions and feedback. Thanks!
 FreePlane: http://freeplane.sourceforge.net/wiki/index.php/Main_Page
 FreeMind: http://freemind.sourceforge.net/wiki/index.php/Main_Page
New in Version 1.0.9:
- Fix Viewing the file from Dropbox
New in Version 1.0.8:
- Show content of rich text nodes
- Display text formatting of plain text nodes
- Added feature to open relative and absolute file links
- Show loading animation when opening large mindmap files
- Small Bugfixes
You can find the complete version history on my website: http://benediktkoeppel.ch/technology/private-projects/droidplane/#version-history