Manjaro Linux is a distro based on Arch that includes a stand-alone Openbox version.  It has the Tint2/Thunar combo, a number of qt apps including qupzilla, and a home-grown package gui called pamac.  It also has an app called Obmenu-generator that automatically adds apps to the root menu.  More info about that can be found 
here.  
Manjaro has a neat layout, an attractive conky themeand uses the keybindings that Crunchbang has made standard - like W+t for terminal and W+f for file manager.  However the menu feels cluttered and there seems to be some duplication of apps.  Why Geany AND Leafpad?  Why LXterminal AND xterm?  There is a Manjaro Settings Manager but the component parts are also listed as apps.  Overall though it feels well thought out.  Typical of anything based on Arch it takes a more sophisticated and creative approach to things and this is seen in the applications created by the team.  The Obmenu-generator is well worth checking out.  It can even be downloaded from the link above.  Anyone into perl?
Manjaro website is 
http://manjaro.org/ and the OB download page is 
here.