Kazehakase is a browser with gecko engine like Epiphany or Galeon and can also be built to use the gtk-webcore engine.
It includes tabbed browsing, remote bookmarks (including RSS, Atom, LIRS and hina-di), variable UI based upon user level. It also supports customisable mouse gestures and key accelerators.
These details are provided for information only. No information here is legal advice and should not be used as such.