When comparing Carpalx QGMLWB vs Maltron Letter Layout, the Slant community recommends Carpalx QGMLWB for most people. In the question“What are the best keyboard layouts for programming?” Carpalx QGMLWB is ranked 4th while Maltron Letter Layout is ranked 10th. The most important reason people chose Carpalx QGMLWB is:
If you already know QWERTY you don't have to relearn the punctuation, with the single exception of the `;:` key which is in QWERTY's `P` position, like Colemak.
Ranked in these QuestionsQuestion Ranking
Pro Punctuation is in the same location as QWERTY
If you already know QWERTY you don't have to relearn the punctuation, with the single exception of the
;: key which is in QWERTY's
P position, like Colemak.
Pro ZXC don't move compared to QWERTY
Like Colemak, the common undo, cut and copy Ctrl-commands don't move from their QWERTY positions. The
V (paste) key does though.
Pro Uses a colemak-like character layout
Uses the colemak character layout of moving P on a standard QWERTY keyboard layout one step down, extending the home row.
Pro Has low consecutive finger use
See the source here.
Pro Letter positions optimized
Via a quantitative effort model.
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 Punctuation is not optimized.
Programmers have to use punctuation a lot, but (except for the
;: key, like Colemak) punctuation hasn't been moved from their positions on QWERTY. In fact, the non-letter characters
, . - " _ ' ) ( ; 0 1 = 2 : are used more than the least-frequent letter
z in a reasonable English corpus. Not optimizing punctuation at all, especially for programmers, is nonsense.
Con V key has moved compared to QWERTY
The common paste shortcut used in for example windows has been moved to the right hand, making the layout harder to learn. This however is fixed in the QGMLWY variant of the carpalx series.
Con Doesn't take finger length into account
Unlike layouts such as norman and workman, QGMLWB doesn't take the length of fingers into account, for example on a standard QWERTY layout, it's easier to reach E than C.
Con Effort model is speculative
The quantitative effort model central to the optimization is based on armchair speculation, rather than a scientific biomedical study. The chosen metrics and weighting for them are likely partially correct. But no-one is really sure how correct.
Con A very small user base and community
Con Doesn't favor the right hand
For right handed users, this keyboard layout doesn't use the usually stronger right hand more than the left, infact it sometimes favors the left hand more.
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.