Firefox a topmost open-source platform , now completely redesigned their browser UI ,
Everything is now following flat ui after arrival of Windows 8 metro design .. but these guys are smart with mixture of flat and curve edge designs..
On hover tabs design will look like a curved edge tabs similar as Firefox browser for android design, one more new feature is added in this 29.0 version is Customizable quick menu ..
I love both the part ..
Enjoy with open browser …