Hacker News Reader

It depends on your definition of success, but the list is bound to include Adblock, Grammarly, Honey and some password manager. And at least Grammarly and Honey are not specifically targeted at computer literate people.

Honey was primarily a browser extension. 4 billion exit

Take a look at Grammarly. A decacorn chrome extension

There seem to be a lot of those chrome video recording/school ones, like Loom. Seems like a lot of schools use it to record lessons. Being on Chromebooks I would think they are used to installing extensions, if allowed! Usually that is on a whitelist basis.

Do not know how much money it brings in though.

Possibly Pinterest. I am not sure if the browser extension was 100% necessary for Pinterest to succeed, but I remember it being part of the new user sign-up flow, at least at one point.

Rakuten (formerly Ebates).

Fakespot and Bubbles have raised millions. Will see how they go

Keepa