Bootflat
▻http://bootflat.github.io/index.html
BOOTFLAT is an open source Flat UI KIT based on #Bootstrap 3.1.0 CSS framework.
And, for the designers, we offer a free PSD Download.
It provides a faster, easier and less repetitive way for web developers or designers to create elegant web apps.
Compatible Browsers: IE8, IE9, IE10, IE11, Firefox, Safari, Opera, Chrome.