ham_convert released in the Version 1.9.1.

Changes:

* HAM6: experimental extended triple mode checking more modify combinations (you can find it at the bottom of the extra options tab). Helpful on worse palettes.
* HAM6: ham modify cycling option – when repeating previous color cycle through modify R/G/B instead of only repeating modify red to minimize fringing when scrolling image (won’t affect quality, but it will make iff larger).
* Auto-switch to Wu instead of NeuQuant on very small images (<300 pixels total) as they’re not supported by NeuQuant and will cause an exception.
* Other small bug fixes.

http://mrsebe.bplaced.net/blog/wordpress/?p=1593

More information about the program on the main page: http://mrsebe.bplaced.net/blog/wordpress/?page_id=374