I wrote a two panels, platform independent file manager in my spare time, and I would like to see if it runs properly on the RPI.
It uses SDL and SDL_ttf, so I see no reason why it shouldn't work, but I would like to know for certain if it works on ARM CPUs.
You can get the source (and windows binaries, if you want to try it on windows) from here: http://www.eternal-lands.com/fm.zip
On the RPI, you just need SDL devel and sdl_ttf devel, then make, and you should be good to go.
If someone could give it a try and post the results, I'd appreciate it.
P.S. This is alpha quality, not all the features are implemented, there might be bugs, but works fine for me.