Tiny File Commander is a very small (130Kb) very fast ad free file manager with beautifull icons.
This file manager asks for only ONE permission.
Check the help menu for instructions.
You can install android apps from your sdcard if you enabled this feature in your phone settings.
*install apps
*view files
*send files
*rename files
*copy files
*delete files
*move files
All this with just one small and fast file manager!

Open Source GPLv3
http://code.google.com/p/tiny-file-commander/