Yes, I use hubpress (http://hubpress.io/) I like not doing like the majority, so I did search something else than jekyll This has replaced a self coded blog that was not suiting my requirements and I was lazy to upgrade it It is on github pages, and I don't have anything to do on my own laptop 'cause it has a built-in administration tool It uses some Ghost themes, so you can create your own themes
I tryed grav too and can tell you it is very good and very extensible too, but you need PHP so github pages doesn't work