"professional Look at Net" is a portable network monitoring tools - net scanner, ports scanner and packets sniffer. Portable features (run on flash-drive) possible only registered version. The Network scanning don't required network administrator privilege, only host administrator right require for silent scanning and IP packets capturing. IP packets filtering on IP addresses, ports, outgoings, incomings and more.

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...

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)

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.

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.

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.