This app is only for programmers.

It can display the HTTP request header of your browsers without Wi-Fi or 3G connection.

AParted allows you to create and repair partitions in your sdcard.

Sysinfo shows various informations about the Android(TM) system such as build, settings, display, etc.

Develope Android applications with HTML,CSS and JavaScript. Access native phone functions like accelerometer,vibrate,phone width... etc.

List of very usefull linux commands.