ROOT Power File Manager is a powerful tool for any user with Rooted android devices.

Appcombine - lightweight and simple app manager tool.

Linux Terminal for Android. Run Linux command on your phone and install external android apps.

Memory Booster Lite Tablet Version - Android RAM Optimizer to Speed up Your Tablet!

A task manager application which monitors running processess and their memory usage. Allows killing of selected processes and remembers previously killed processes.

Reach your Android’s maximum potential by increasing speed, saving battery power and monitoring data usage with NetQin’s Android optimization app. Android Booster FREE will improve your Androids performance in seconds with it’s easy to use interface by helping you reclaim memory, save battery power, kill tasks and give you an easy way to uninstall unwanted apps. Android Booster also contains a handy Widget which gives you the power of one-click optimization.

Gemini Taskiller Widget

This is a widget used to optimize RAM of your Android device (nothing for else :-), but it is easy, fast, safe, extreme less RAM usage!). The "Shake Mode" allow user to release RAM at any time (even when you are playing game) by shaking your phone! It can be used as either plug-in of "Gemini App Manager (v1.5.0 and above)" or a independent widget.