- unlock Origin (for feature rich and sophisticated ad blocking)
- uMatrix (per-domain and subdomain Javascript blocking)
- NoScript (more Javascript exploit protection)
- Pentadactyl and/or Evil (vim-like modal browsing)
Lack of the first three was why I never switched to qutebrowser, despite it having a nice Pentadactyl-like UI.
I thought that earlier versions (when it was still called Next) did support keyboard-based browsing, but maybe I'm misremembering (I toyed with uzbl too). The first thing I'd want for keyboard-based navigation would be an easily accessible cheat sheet.
It does support keyboard-based navigation, and you can define your own bindings to any of the functions so you can alter the defaults or extend them to your own purposes.
Scroll down to "Visual mode" for their take on vim-like bindings.
There is a whole article comparing Nyxt to extensions such as Pentadactyl (Vimium, Vimari, etc). Nyxt can do way more than them.
Check it out:
https://nyxt.atlas.engineer/article/nyxt-versus-plugins.org
Also, it is already possible to have emacs and vi keybindings in Nyxt:
uMatrix gives you way more fine-grained control over this (JS on/off per-domain and per-subdomain) along with lots of other features and a great UI that makes all this manageable. Just a simple on/off switch for JS is no comparison.
However, there is this: https://gitlab.com/jgkamat/jmatrix
It's quite a hack and I have no idea where it is UI-wise, but it seems to work for some people at least.