Originally Posted by TobiSGD
To run Thunar you do not need to run XFCE (back in my Debian days I have used Thunar with Openbox).
But anyways, you can try PCManFM, SpaceFM, Xfe, QTFM and many more.
I have compiled few of them, tried, on a testing machine. Ok, for compiling, I could see the dependencies of them (except pcmanfm wich was too much work).
PCmanFm is not very much lightweight. It is cute but quite heavy.
The compilation of spacefm went fine with gtk2.0+, libudev, and few things. The spacefm is diverging from the windows explorer. To me, it does look very complicate to my friend. Any principally, there is not Copy / paste icons or neither into the menu, it is far too complicated. he will not make it.
XFE would be nicer alternative, light - weight, and closer (bit ugly). But but, it is extremely buggy and un-finished application. My mouse cursor is all the time in waiting. I'd better not check the code further, processes, .. I fear a high CPU use.
QTFM has no clear menu for very beginners. (File.... Help) On the other hand it is lightweight. /src$ qtfm
qtfm: symbol lookup error: qtfm: undefined symbol: _ZN9QListData11detach_growEPii
Would you have more hopefully?