EStrongs File Explorer

EStrongs File Explorer - is a good file manager for the family of phones android OS.
Features:
Can delete, move and copy files.
Shows thumbnails of images.
Allows the use of the multi-select files.
Has a built-in text editor.
Can search for files.
Built-in Manager application management.
Allows you to create backups.
Able to send files in various ways (mail, sms)
Can unpack zip files.
Can manage files via FTP.