This has gotten some attention, especially about a week ago, but I really hope more people will continue to try it and, if interested, support it. It is Firefox, but heavily modified to please a different audience that prefers a slightly different UI than Firefox. It has some of the appeal of Arc, Vivaldi, and the Sidebery extension.
In my view, it is very promising, and all competition in this space is good. Here it is on Github, also.
Maybe it's the portable version I'm using, but I can't figure out how to click and drag the window. There's nowhere up top to grab and move to another monitor/shift around on the screen. Am I going crazy or is there a different way to move it around?