This app is one of the system utility tool that improves your androids performance. It increases your phones performance and saves battery life. Apparently which boost your system os and memory. It also has process manager which let you clean system running apps. It included with Backup & Restore feature that help you backup apps as apk file and restore when you need them. System Cleaner feature cleans Cache, Thumbnail Cache, Log File, Empty Folder, Browser History, Clipboard, Market History...

This calculator can perform up to 10 digit calculation.
You can use it in your daily life.
Application helps to maintain budgets, calculation any where any on just a click.
Very interactive interface is implemented.

Key features:
Easier to use .
Light weight software .
Portrait and landscape screen supported.
Functionality such as square root, memory store etc.

smart app cache cleaner is a real smart cache cleaner.
Smart 1tap App cache cleaner is a quick tool for clearing application cached files.It is the fastest cache cleaner for android.

This app will help you know better your device, by providing you useful system information and perfoming a system speed test.

This utility allows you to monitor a various system info in "always on top" floating window (overlay mode).
Available meters:
- CPU Usage meter
- Free RAM meter
- CPU Frequency indicator
- 2g/3g/Wi-Fi Traffic meter
- Battery Level
- Battery Temperature
- Battery Current (mA)
- Wi-Fi Signal Level
- Current Time indicator
- GSM Signal Level
- Number of fixed GPS satellites
- Most resource-intensive processes

ROOT REQUIRED!

AutoKiller fine tunes android's inner memory manager to keep your device fast and smooth.

Features:
-process manager
-advanced mode
-alternate preset while sleep
-presets (with shortcuts)
-settings reapply on boot
-statistics

check home page for details!

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.

File management app that let you copy, swap card, and even copy files in batches. On top of that, built-in FTP client.

Test app for MEMORY WIDGET PRO

This application both blocks unwanted calls and helps manage a blacklist.

Protect your battery from excessive heating and prolong capacity.

Most Lithium-Ion (Li-Ion) or Lithium polymer (Li-Po) cells must not be charged above 45°C or discharged above 60°C. These limits can be pushed a bit higher, but at the expense of cycle life.

Better alternative to other Task Killers/Task Managers. STK from NetQin is one of the fastest and smallest task killers.
Quickly kill running tasks, save the RAM for your mobile. Save battery power. This is a free application.
We will try our best to make it faster, smaller, add features needed and easier to use.

Pappy Tools (System Tools and Utilities) is a new product designed to improve your android experience .
At the moment it is a dynamically evolving product, which is being actively tested.

One-stop task manager. Monitor and kill task, speed up phone, and save battery.

1*1widget to monitor memory usage.
search&sort task by name.
auto-kill task when screen off.
ignore app when kill.
vivid online help.

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

SeePU shows the current CPU utilization and available RAM in the notification area.

All you need to know about your Android system and more!

Simple Task Killer allows user to safely end running applications.

WalletPro is an application for Android Phones which gives you a safe and secure way to store all of your personal and/or business critical information.

    安安卜是一款集文件管理、任务管理、来电防火墙、短信过滤、网络管理、数据库管理、垃圾清理、开机加速、内存管理、监控器于一体的Android管理软件，全面管理android系统问题。
    AndBox is a set of files management, task management, call firewall, SMS filtering, network management, database management, garbage clean, boot speed, memory management, monitor management software, Overall management of the android system problems.

More http://code.google.com/p/andbox/
https://www.slideme.org/user/18222/applications/18222