When comparing Programmer Dvorak vs Maltron Letter Layout, the Slant community recommends Programmer Dvorak for most people. In the question“What are the best keyboard layouts for programming?” Programmer Dvorak is ranked 4th while Maltron Letter Layout is ranked 8th.
Ranked in these QuestionsQuestion Ranking
Pro Easy to learn if you're already used to Dvorak
Pro Programmer punctuation without shifting on the top row
The top row is hardest to reach, and shifting doesn't make this easier. Programmers uses punctuation far more than numerals, so it makes sense to shift for the numerals instead of the punctuation.
Pro Better number arrangement
The smallest numerals are the most frequently used, so why should they be on the weak fingers of the left hand? The order still makes sense too. Odd numbers on the left, even numbers on the right, ascending from the inside out (with the least used numeral '9' in the middle).
Pro Made for programming
This keyboard took a stand and optimized the Dvorak standard for programming.
Pro Open source
The keyboard layout is open source and available for edition.
Pro Available for major operating systems
Easy to install on Windows, OS X and Linux.
Pro Highly optimized for frequency of use
This includes di- and tri-graphs, as well as the individual letter frequency.
Pro Punctuation is also optimized
The comma and period are more frequent than KVJZXQ.
Pro E on the thumb
E is the most used English letter by far at almost 13%.
Con Requires adjustment period
Letters are moved, punctuation moved, and number in num lock are moved too.
Con Typing numbers is hard
Numbers are arranged for their characters, not in ascending order. You also have to shift.
Con Punctuation moved, not just letters
Punctuation moved in addition to letters, meaning that the learning curve is that much harder coming from QWERTY because nearly every key is in a different place.
Con Requires a physical keyboard
The Maltron layout requires an expensive physical Maltron keyboard. Most layout options are a simple change in software, to remap existing keys. (Touch typists mostly don't look at the labels anyway.) But there's no way to add the required thumb keys for this layout in software.