Has anyone looked at
Tile Studio for creating the bitmap graphic tiles for games?
Tile Studio is a complete development utility for graphics of tile-based games. The application contains a bitmap editor for creating tiles and sprites and a map editor for designing level maps.
Tile Studio can be used together with ANY programming language, since the output is completely programmable! You can program Tile Studio to output your maps, animation sequences, bitmaps, palettes, etc. in any format and include the output directly into your source code!