Hi, Dungeon Painter is a powerful flash-based encounter map design tool.
Here is a short feature list:
Layers and groups
Tile categories & subcategories with preview
Export to png and jpg
Maps sharing through online gallery
Export to multipage pdf for print
Special black & white collection for print
Square and hex grid
Hotkeys
Screenshot, and small video
https://pyromancers.com/media/img/dungeon_painter.jpg
No downloads, installation or registration required