I've built a simple srolling tile map editor for use with BlitzMax the source is included as well as a few samples and html docs. This is an alpha V0.01. Both MacOS X and Windows executables are included in the zip.
You can find more info here: http://www.scottshaver2000.com/forum/viewtopic.php?t=99
You can find more info here: http://www.scottshaver2000.com/forum/viewtopic.php?t=99