Which another comment mentioned. http://acme.cat-v.org/. - Source: Hacker News / about 1 month ago

Everyone should try Acme for a month and then go back to your favourite editor. http://acme.cat-v.org/. - Source: Hacker News / 7 months ago

Hmm, so while he was busy optimizing and learning and tweaking his keyboard setup, others invent game changing programming languages like Go, and then also write text editors that make heavy use of the mouse, and of mouse chording: http://acme.cat-v.org/ So I’m sceptical whether this approach of spending ages on this really is that productive, cost-benefit-wise. Usually it doesn’t stop there, but this optimization... - Source: Hacker News / about 1 year ago

Uzbl (https://www.uzbl.org/) used to do that but it seems it was too heavy in practice. Today I'm more interestea in turning the web into a more textual format to integrate it in acme (http://acme.cat-v.org/) which is already built around modularity. Making the web a content provider and letting me interact withit the way I want. - Source: Hacker News / about 1 year ago

As you may have guessed form my username, I enjoy the acme editor. Source: about 1 year ago

The closest modern equivalent is the Keymouse Track and it's awesome. Source: 12 months ago

A somewhat more obscure, and fairly spendy option, is the KeyMouse. Each half has an optical sensor built into the bottom, and they also have trackball versions. Source: about 1 year ago

Well, there's the Keymouse which is a split keyboard with a mouse sensor under each half. That had quite a long development period - IIRC it was going to have smaller keys with Cherry ML low-profile switches so it wasn't too huge, and lots of people in here complained and asked for MX regardless of size. Source: over 1 year ago