WPS Office is the smallest size (less than 37MB) and all-in-one complete free office suite on Android mobile and tablets.

A tiny program for files and directories transfer via WiFi

Best android parental control app with child lock that can childproof your device.An app launcher with parental controls & child lock that protects your personal data and restricts kids to apps you have approved. Kids Place also prevents children from downloading new apps, making phone calls, texting or performing other actions that can cost you money.

Manage/Transfer your PC Files through your phone

AirDroid allows you to access and manage your Android phone or tablet from Windows, Mac or the web, wirelessly, for free.

ES, 600 millions global downloads, file manager trend leader on Android

Xender is the best file transfer app for android phones. You can directly connected in order to transfer files, even without WIFI, 3G and SIM Card and it does not cost any mobile traffic. A movie in just 50 seconds. Support App, Photo, Movie any kind of file and format. "Connect PC" function lets you upload and download files from your phone or tablet over a wireless connection. Transfer files without a USB cable.