#8 – ES File Explorer
ES File Explorer is an excellent, fully featured file and application manager. It functions as a file manager, application manager, task killer, cloud storage client (compatible with Dropbox, Google Drive, SkyDrive and more), FTP client, and LAN Samba client. It provides access to pictures, music, video, documents, and other files on both your Android devices and your computers.
The developer also offers an app called ES Task Manager.