There was another that was truly optimized for use Coders, that is not Dvorak based. It had the Option key (⌥) as part of its modifiers. I assume it was called something like the coders layout? I don't recall. If any one can recall it, that would be awesome.
I used it for some time and I quite liked it, more than Colemak. I was reaching 80-90 wpm (I'm about 140-150 wpm on QWERTY). However English is not my native language and since QGMLWY is optimized for English, it wasn't a viable alternative for me in long run. Interestingly, even though I quit typing on QGMLWY long ago, when I occassionally switch to that layout (I still have it installed), I'm able to type on it. Muscular memory dies hard. I do make typos, but I feel that if I returned to practice, I'd pick it up again quickly.
http://mkweb.bcgsc.ca/carpalx/?full_optimization
Take not of the script you can download to pipe your scripts to, and learn what is the best layout you actually need:
http://mkweb.bcgsc.ca/carpalx/?requirements
Here's a list of them:
http://deskthority.net/wiki/Keyboard_layouts
There was another that was truly optimized for use Coders, that is not Dvorak based. It had the Option key (⌥) as part of its modifiers. I assume it was called something like the coders layout? I don't recall. If any one can recall it, that would be awesome.