The ultimate file manager for root users, similar to the rootexplorer,It is a support system-level view document management software,also supports file operations and sharing.

安安文件管理是一款支持浏览系统级的文件管理软件，同时支持文件操作和分享。
More http://code.google.com/p/andbox/
https://www.slideme.org/user/18222/applications/18222

PDF Utility - Lite is very comprehensive tool to perform various operation on pdf file.
-Split the pdf file at specific page.
-Merge many pdf to one pdf
-Extract Images from pdf
-Overlay pdf files
-Encrypt(password protected) pdf

Finally, a 1-click connect for VPN. Avoid writing VPN-password over and over. Install the smart 1-VPN widget, and connect/disconnect in 1 click.

THIS IS A TRIAL VERSION, the full version costs $3. Learn more at our website:
http://doandroids.com/Apps/OneVpn/

AndFire is a android firewal software,It support to message filter,block calls,app firewall,ftp pop3 smtp block and virus firewall.You can block some network application software to help you save flow!

AndFire是一款Android 防火墙软件，主要支持黑名单信息过滤，阻止来电，应用软件阻止网络，FTP，POP3，SMTP阻止，病毒防火墙等，你可以阻止一些联网的应用软件，帮助你节约网络流量！

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

Fast App Installer ,
Easy way to install external android application on your phone, search sdcard's specified folders and install any app you need.

This is the Ultimate Application Killer. This app lets you kill running applications and system services. You can also back-up applications you’ve downloaded or uninstall them from your device.

Features include:
• Kill Running Applications
• Kill Running System Applications
• Hide Applications
• Uninstall Downloaded Applications
• Backup Applications

It is a battery percentage level indicator app. Its size is only 500 KB. So this app is so lite and never uses RAM & Battery with improved & lite UI.