[ploum]

There’s also Kakoune, which is very similar to Helix.

See https://andreyor.st/posts/2023-09-20-why-kakoune/

[sheepscreek]

Kakoune makes no claims to be Vim compatible though. The keystrokes are completely different.

[xigoi]

Helix is not Vim-compatible either.

[Conscat]

One big difference between Helix and Kakoune is that Helix has a visual mode, whereas Kakoune only wants chording to extend text regions.