Rated 4 out of 5 stars

Από τον/την Brachyblast στις Ιούλ. 23, 2016 · μόνιμος σύνδεσμος

This add-on should be in vanilla Firefox.
However I think the default scroll mode should be "Scrolling down moves right" as it works this way when switching workspaces and windows on most desktop environments.