Map Manager Library
I am currently working on releasing much of the MapViewer code in an Open Source library, called the Map Manager Library, under the Lesser GNU Public License (LGPL). This work is currently being done in conjunction with the MARIE project. The library is still in a very early stage, and needs to be fully tested. It also has no make files or Visual Studio project files yet, however it does build correctly under Windows. Multi-platform issues are still being worked on.
Because of these issues, the code in the library is not yet really fit for public consumption, so take it at your own risk. Please don't email me asking with help building the code, or for help understanding it - both build issues and documentation are currently being worked on.
The library is available from Sourceforge, at http://sourceforge.net/projects/mapmanager/