When comparing Dvorak Simplified Keyboard vs Colemak, the Slant community recommends Dvorak Simplified Keyboard for most people. In the question“What are the best keyboard layouts for programming?” Dvorak Simplified Keyboard is ranked 2nd while Colemak is ranked 3rd. The most important reason people chose Dvorak Simplified Keyboard is:
Designed with comfort in mind.
Ranked in these QuestionsQuestion Ranking
Pro More ergonomic
Designed with comfort in mind.
Pro Standard on all operating systems
You can find this layout on all operating systems.
Pro Opportunity to learn proper touch typing
Most people passively learn and use QWERTY-based layouts before switching to Dvorak. The switch gives them an opportunity to completely relearn 10-finger typing, which is where a significant portion of the speedup comes from. Coupled with more ergonomic key placement, this makes for a more enjoyable typing experience.
Pro You can reuse qwerty layout
Since letters and symbols only change place, but not key, you can change the keys on your keyboard and get a full comfortable Dvorak layout, without having to buy a new keyboard.
Pro Useful keys in home row
70% of more useful keys are placed in the home row.
Pro AZXCV don't move compared to QWERTY
If you rely on the Control-A/X/C/V shortcuts (select all, cut, copy, paste), these keys don't move from their QWERTY locations.
Pro Optimized for quick two-letter bigrams
Not only are the most common English letters on home row under your fingers, but many common two-letter combinations are placed next to each other as well allowing for a fluid "inward roll" motion of letter combos (a-r, r-s, s-t, n-e, e-i, and i-o combos). The inward roll motion is debatably speedier than optimizing finger alternation like Dvorak offers.
Pro Relatively quick to learn
If coming from QWERTY, only a couple of keys move between hands.
Pro Highly ergonomic
Con Inconvenient for common key-shortcuts
Key bindings common to most applications, such as Ctrl+Z/C/V, can't be done on the left hand while mousing with the right. Shortcuts for other applications are out of the QWERTY positions they were designed for and aren't so convenient to access.
Con The "ls" command is uncomfortable to type
This is a very common command programmers have to type often when working with the shell. It's pretty awkward in Dvorak, especially when you add common options. Try typing "ls ‐latr", and see how that feels.
Con Not easy on the right pinky finger
Most useful symbols for programming are on the right pinky finger, which is not very comfortable.
Con Not the standard keyboard layout
It will be difficult to frequently switch between computers
Con Not actually faster than QWERTY
Maybe it's more ergonomic, but that's debatable. You'll certainly get more benefit from an ergonomic keyboard than a change in layout. Dvorak's reputation for speed is due to a typo in the initial press report, and a biased (and since discredited) study run by Dvorak himself.
Con Doesn't account for finger length
The keyboard layout doesn't account for E being easier to press than C for example on a QWERTY layout, this can be seen for example using the workman key cap scores done here.
Con L is too hard to reach
L is not a rare letter. It's used even more than
U is in English. Why put it in a difficult spot for use with the weak pinky finger?
Con The U is directly under your finger while the I is far away
I is used more--by about 2.5 times. In fact,
U is the least used vowel after
Y. The consonants
TNSHRDLC all appear more often. So why is
U directly under your finger? And why should you have to stretch for
Con F is too hard to reach
F is not an especially common letter, but it's used much more than the rare letters
JQZ. Why is it on one of the most difficult spots on the keyboard? It's also used in
OF, one of the more common bigrams, ranked at #13. Maybe some other languages use
Z more than English, but why is
F harder to reach than
Con Designed for English
Like Dvorak, this layout privileges English letter frequency, and lacks accented letters.
Since the topic is about programming, the argument is weak as most code is written in English, yet you don't want to learn a layout to type code, and another to type in your native language...
But the problem isn't specific to Colemak, it is tied to all "ergonomic" layouts, and might have no solution.
Con Bad for Vim users
Vim was designed on QWERTY. The HJKL "arrow" keys still kind of work in Dvorak, but their positions make less sense in Colemak.
Con The "HE" bigram is awkward
For all of Colemak's focus on optimizing English bigrams, the second-most used English bigram, "HE", is still kind of awkward due to same-hand lateral motion. This bigram is much easier in both QWERTY and Dvorak. If your concern is RSI, Colemak isn't good enough.