Vivaldi
Fellow developers always seem surprised when I tell them I don't use Firefox. It's not that I fell out of love with it sooner, I never really fell in love with it in the first place. I get fed up with Internet Explorer back in 2000 and jumped ship to Opera way before Firefox was even a thing. I did feel adrift in the final days of classic Opera when it failed to keep pace, and they then took a long time to deliver its rather lacklustre Chromium-based reincarnation on Linux. I did look elsewhere, briefly at Otter, but it was still in its infancy, and at Firefox, but it didn't appeal. If I remember correctly, it still didn't handle dark desktop themes well, which was the case for a very long time. If it had, I might have stayed. Fortunately, I was saved just in time by the arrival of Vivaldi. Yes, I'm sure many of you will be all too quick to point out that it is also Chromium-based, but it doesn't feel like it, and it doesn't come with the usual spyware baggage. The Vivaldi team, being a continuation of the original Opera team, have always been strong on this point and have earned my trust over these long years,