VM Heap Tool allows to change the Dalvik VM heap size to give demanding applications more heap space (thus decreasing frequency of garbage collection) to speed-up your device
ZDbox (All-In-One toolbox) is an amazing all-in-one toolbox. Five stars in xda forum.
ZDbox is an amazing and free all-in-one toolbox. It holds a collection of useful tools and has a nice and easy to use interface. With ZDbox you’re getting your mobile/cell phone under control, do easily some optimization and customize it to your needs
Gemini Taskiller Widget - This is a widget to optimize RAM of your Android phone. It can be used as either plug-in of Gemini App Manager or as independent widget. User can select Gemini Taskiller Widget from widget list in desktop (HOME screen)
BN Pro BT Arial XL Legacy Text - This is an *ADDON* package for Battery Notifier Pro BT 1.3.6 or higher. https://market.android.com/details?id=com.larryvgs.batterypro
(This addon does nothing on its own and requires Battery Notifier Pro BT 1.3.6 or higher to run
Android Booster - The whole productivity/utility SOLUTION:
Task Killer + Battery Saver + Memory Booster + Uninstaller + File Manager + Settings + Network Manager + Process Manager
These can optimize your android device via manage apps/tasks, show battery used, one-click turn on/off wifi, mobile network, Bluetooth and so on.
The Coolest thing is the Android booster Widget
GainSeeker Mobile is an app designed by Hertzler Systems Inc. that makes a version of their software available on mobile devices. It accesses Dashboards and Desktops. Note: Requires GainSeeker WebServices to access your own data
Proton Voltage Control is an easy to use application that allows you to set custom voltages for Nexus S phones running a supported version of Netarchy kernels (1.3.0.6 and up)