PEiD (short for PE iDentifier) is a well-known professional packer/cryptor/compiler detecting tool. It's so powerful that it can detect the types/signatures of almost any PE file packing tools (at present, the number has been more than 600 kinds). In addition to the official version, AppNee also provides you its full-plugin version, which can be treated as the most perfect one version (contains 60+ plugins and necessary runtime library files: mfc70.dll, msvcr70.dll, rtl70.bpl, vcl70.bpl) on the Internet at present. I do believe reverse engineers or software cracking/unpacking enthusiasts must like it very much.

The significance of file synchronizing tools is: through simple actions to complete a large number of complex and repetitive, manual file/folder copying, moving operation. SyncToy is a free, easy-to-use, and full automatic file/folder synchronizer produced by Microsoft that supports multiple sync modes and command-line operation.

Two possible situations make you want to take a look at the users information in your local area network (LAN):

1. The speed of Internet connection becomes slower and slower, and it was no use giving many tries like modifying DNS, optimizing network
2. To check whether there is a potential attacker

This time, we can use Wireless Network Watcher - a tiny and free local wireless/wired network connection scanner & viewer from NirSoft.

Decompiler and disassembler are essential tools for any sharp-sighted programmers. No matter which programming languages, they have their corresponding decompilers. For compiled Java binary class file, there are two excellent decompilers: they are freeware Java Decompiler and commercial software DJ Java Decompiler (AppNee will release its related resources later).

PotPlayer is a new generation of multimedia player developed by KMPlayer's original author Kang Yong-Huee, after he joined the Daum company (a web portal in South Korea). With relatively small size and clear UI, PotPlayer achieved good support to most of video formats.