I switched to Floorp last month and it's amazing. It's a Firefox fork with tab rows. Tab rows are the real MVP. None of the annoying weirdness of Tree Style Tabs, where you have to keep track of a hierarchy of tabs that are hidden behind other tabs. Instead, you just see 3-4 rows of tabs and you make a mental map of what is where.

Once they release the new version in a month or two, we'll also get newer Firefox features like these tab groups, and we'll also get workspace improvements. Floorp is 10/10.