I really enjoy using Zen. It’s pretty, has plenty of neat features that don’t require extensions, and the development is very active. The software is not yet mature, so it frequently changes behaviours and how things look, so new users need to be aware of that.
I did try Floorp a few months ago, but I didn’t like it as much. It felt like using regular Firefox with a few tweaks.
That is really disappointing… I understand the dev wanting to move on to something else after 10 years, but it would have been nice to not do it so abruptly.
Currently, I’m not aware of any good alternative to Mull…