Some of my picks to add to all other comments

• Gesturefy: Mouse gesture addon. It can also run custom javascript. For example I have a script that makes copying text, links, buttons easier.
• Imagus mod: Hover zoom addon with up-to-date sieves that actually work. The sieve team is quite good.
• BetterViewer: Image viewer although some buttons don’t work on firefox.
• Fastforward: circumvents annoying link shorteners
• Distill: Monitor webpage or feed for changes

I also have many ***monkey and stylus scripts.

11500 this month
450000 total (searched for . ) requires setting places.history.expiration.max_pages to a higher amount.
Its quite useful

The :has() selector is now supported.

Great news! I was waiting for this for a while now.

Chrome does lock some of your browser data to the current (windows) account. Which is why all chromium profiles aren’t portable. You can’t move your profile to another pc.

As for myself, I use an encrypted container for my ff profile. A fully encrypted disk is a better choice though.