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.

This is HTC Sense like clock widget !

android Task Manager to close, management applications, optimizing the system, improve system performance!
Press and select the pop-up action menu item!

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

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.

Download one of the best Android eBook Readers now!
★The leading eBook application for the Android platform
★Pre-installed in 20+ different Smartphones and Tablets
★13+ million users from over 200 countries

    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

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

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

ES, 600 millions global downloads, file manager trend leader on Android