WinPCap

SYN Scanner for Proxy server is the software that helps to find proxy servers very fast for Windows.It's a SYN scanner,Super fast to find proxy servers.It scans 3,600,000 IP addresses per hour, without missing or errors! Find your proxy servers by yourself. It is so easy to use even for a computer beginner.

Packet analyzer with HTTP file capture, a Graphical Packets Mode that shows traffic with visual effects, per-IP/per-Port/per-IP-Pair statistical information collection, and more. All in a single, easy to use Windows application. No third party components necessary.

MicroOLAP TCPDUMP for Windows accurately reproduces all features of the original tcpdump by LBNL's Network Research Group , developed for the UNIX systems.
Since MicroOLAP TCPDUMP for Windows is compiled with the Packet Sniffer SDK, it has the following advantages:

does not require any third-party preinstalled drivers;
works from the single 300K .EXE file;
supports 1Gbit networks;
may be launched remotely using remote admin tools.

LAN and WLAN Sniffer.
A program for low-level network packets capturing and analyzing in
real-time. Allows to capture all network traffic even in switched LAN.
Sniffer supports parsing of following protocols: IP, TCP, UDP and many others,
Also includes: tcpdump, tcpflow, tcpstat.

Simkl Tray gives you easy access to Simkl IM History Viewer from your PC. Simkl allows you to consolidate all your IMs - ICQ, AIM, Yahoo, or MSN. It's a Web application that collects all your instant messaging conversations on their servers into one convenient, searchable archive which can be accessed online from any computer. It is possible to generate history for chosen contacts only, search for the newest conversations...

IRC, EMail, AIM, SMB, MSN, ICQ sniffer. A program that intercepts messages and user details, including passwords, across the whole LAN in real time. Supports monitor mode in WLANs. It is possible to receive and view all these messages to and from all LAN users in the same time they will receive or send it. All intercepted messages are also stored in files, which can be later processed and analyzed.

SmartSniff allows you to capture TCP/IP packets that pass through your network adapter, and view the captured data as sequence of conversations between clients and servers. You can view the TCP/IP conversations in Ascii mode (for text-based protocols, like HTTP, SMTP, POP3 and FTP.) or as hex dump. (for non-text base protocols, like DNS)