I enjoy the Pocket integration in Firefox, as well as reader mode (which I think is powered by Pocket?). I also have an extension that allows me to mimic other

I enjoy the Pocket integration in Firefox, as well as reader mode (which I think is powered by Pocket?). I also have an extension that allows me to mimic other user agents (useful for some sites to immitate an iPhone on Android). Since Firefox comes with "Request desktop site" by default though, this one is less important. Other than that: Greasemonkey is very useful to me, as I have a bunch of scripts that minimize page layouts of sites I frequent.