I used Fifth a bit, which is something aesthetically similar to old Opera made with fltk and a webkit port to fltk. But it’s abandoned now.

It’s so sad really, when I was a Windows user, it was Opera, when I moved to Linux, it was again Opera, then I also started using Conkeror (based on XULRunner).

Then Opera died. Then XULRunner died. No usable web browser anymore.