Mozilla Firefox GTK+ 3 web browser on Ubuntu

a GTK 3 build of Mozilla Firefox web browser running Ubuntu linux version 42 nightly build GTK , or the GIMP Toolkit, is a multi-platform toolkit for creating graphical user interfaces. Offering a complete set of widgets, GTK is suitable for projects ranging from small one-off tools to complete application suites. GTK is written in C but has been designed from the ground up to support a wide range of languages, not only C/C . Using GTK from languages such as Perl