HTML5 Boilerplate

Bootstrap (twbs)   (Compare Project)

Mostly written in JavaScript

License: mit

Cascade Framework   (Compare Project)

Mostly written in JavaScript

License: mit

Arta   (Compare Project)

Mostly written in PHP

License: gpl3_or_later

agiletoolkit-css   (Compare Project)

Mostly written in JavaScript

License: mit

PackageSize   (Compare Project)

Mostly written in JavaScript

License: mit

Chromium (Google Chrome)   (Compare Project)

Mostly written in C++

License: bsd

Ample SDK - JavaScript UI Framework   (Compare Project)

Mostly written in JavaScript

License: gpl, mit

Pale Moon   (Compare Project)

License: mozilla_public_2_0

Pines   (Compare Project)

Mostly written in PHP

License: Unknown

jQTouch   (Compare Project)

Mostly written in JavaScript

License: mit