Colemak Mod-DH - Colemak Mod-DH is a minor modification to the Colemak alternative keyboard layout, moving the heavily-used 'D' & 'H' keys to the bottom row assignments for both index fingers.
NeO - NeO is a powerful outliner built for OS X.
Carpalx QGMLWY - A Carpalx variant with V fixed in its QWERTY position.
Colemak - Colemak is a modern keyboard touch typing layout designed to be a practical improvement on QWERTY and Dvorak layouts.
Arensito - Designed by a programmer, for programming. Named for its home position letters. Also known as Hallingstad's layout, for its inventor.
Row Swap (QWDFGY) - Row Swap (QWDFGY) is a QWERTY mod that relocates several relevant letters from the first row to the home row for your convenience.