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.

Simple Task Killer allows user to safely end running applications.

    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

Fully control your Windows PX!

NetQin Mobile Manager will be a good call filter just for you. Block unwanted calls now and protect your privacy. Now with better developed features, you will no longer need to worry about privacy leak. Protect your private info 24x7.

Short for MTK, Mobo Task Killer can also be known as a task killer, task killer manager, app killer or service killer etc. It helps manage your phone system’s running apps and services. If your phone often runs slowly or battery is exhausted so soon, our task killer will be an ultimate choice app to kill tasks, free memory, and speed up your phone as well as save battery.

This ultimate File Manager app for both phones and tablets offers the ability to execute all your essential file management tasks without the overhead of other file managers. This lightweight application offers the ability to:

- Explore Folders and Browse Files
- Copy and Paste Files
- Move and Delete Files
- Backup Applications
- Launch Applications

Enjoy and let us know how we can improve!

WiFi Android Manager
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Tired of taking the SD Card in and out to synchronize your files with PC ?
Then WiFi Android Manager is your perfect choice.

Battery Booster is a powerful battery boosting tool and power management application specially designed for Android smartphone (with Homescreen Widget Support). Based on system specifications, Battery Booster provides the most accurate information on your battery charge, which includes the real-time battery capacity, temperature, voltage, etc. An auto-updating live chart allows you to visually track your battery usage.

There are many applications that automatically start when you turn on your device; many of these you don't use or need, they just consume your valuable resources. Autorun Killer lets you manage applications that start up when you boot your device. Donate version even tries to prevent their restart (and is ad-free).

You can always see the megabytes consumed above all applications.

Easy and free way to inspect your android device system internals!

Trial 3-days;

aiSystemWidget is system monitor utility that provides newest, innovative way of monitoring your Android based mobile device system resources, like Memory, CPU, Network traffic, Battery usage and etc.

Appcombine - lightweight and simple app manager tool.

FAST DOWNLOADER. Download files fast.
With Fast Downloader you can download any file to your Android device very easily and faster than ever.

Free, top-rated, real-time antivirus and anti-theft protection for Android™ devices.

A variety of powerful system tools and utilities to get things done on Android.