Micro Manager app info
Micro Manager is an open source (Actually Free Software) file manager for android systems under GNU License, it is little and efficient and also fast file manager for android with minimum use of battery and hardware power, it has many feature and grow as fast as possible.
highlighted feature:
support Persian & English as GUI language
fast and clean thumbnail creation
user can change thumbnail size
user can change text size & text color
two colored background for better visualization
user can change colors of background via a nice color chooser
sorting options
and many common feature like copy, move, delete, rename ...
websites:
http://mehdok.blogspot.com/
https://sourceforge.net/projects/a-micromanager/files
https://github.com/mehdok/MicroManager