ES File Explorer is a free, full-featured resource manager.
Over 300 millions global downloads, It's the file manager trend leader on Android! It currently supports 30+ languages.
It functions as all of these apps in one: file manager, application manager, task killer, cloud storage client (compatible with Dropbox, Google Drive, SkyDrive, Box.net, Sugarsync, Yandex, Amazon S3, Ubuntu One 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, and you can share them with your friends over 3G, 4G, EDGE, or Wi-Fi easily.
Popular task killer on Android. View device Info/Free Memory/Kill Task/Uninstall App/Speed up the device.
If you like UI style in older versions, you might install and choose it from themes settings in ES V3.0 above versions.
ES File Explorer Old is older classic version of ES. If you would like Android 2.3 style instead of Android 4.0 style, you might choose this one.