I personally use and love Middleman http://middlemanapp.com
It is more general purpose compared to Jekyll, which is more blog-focused.
It can be anything you want it to be. Responsiveness can be obtained by using a CSS framework. These things are independent of the static generator framework.
It can be anything you want it to be. Responsiveness can be obtained by using a CSS framework. These things are independent of the static generator framework.