A tile editor used to extract and manipulate sprites from roms. Tilem is tile editor that allows for the manipulation of console graphics. It is written in wxPython, and leverages numpy for its efficient handling of large numerical data sets. It is still under HEAVY development (read: it doesn't completely work yet) but you are welcome to see the initial prototype.

Tilem Features:
1. Tilem supports all major legacy gaming system including: NES, SNES, Gameboy, Sega Genesis/MegaDrive/32x
2. Arbitrary tile sizes
3. User friendly GUI
4. The ability to import graphics into an existing ROM
5. The ability to export graphics from ROMs in a wide variety of formats: JPG, PNG, GIF, BMP
6. Custom palette creation along with the ability to import external palettes or even palettes from within the ROM itself.

The license of this software is Free, you can free download and free use this graphing software.