professional Look at Net DEMO is a LAN monitoring tools - net scanner, ports scanner and packets sniffer. Don't need in third-party libraries, such as WinPCap, etc.
Network scanner is an IP scanner for network analysis that will allow you to see all network computers in several seconds. It can scan an unlimited number of IP address ranges or computers from a list.
Manage remote processes and control remote computers. Remote Process Explorer replaces Windows Task Manager with a superior product. Remote Process Explorer allows you to monitor and control all local and remote processes through a single view.
LinkFerret is a versatile Ethernet/ 802.11 network monitor and packet sniffer. All of the essential wireless monitoring functionality, including signal monitoring, channel scannning, and WEP decryption are supported.
Netoscope is a simple and effective tool to monitor Internet services such as web, ftp, or mail servers. When a monitored service fails, Netoscope can notify you about it or even correct the problem if possible.
Network Eagle is a powerful network monitor. It monitors the state of servers and various remote services over the network. If the state of a monitored object has changed, NE will send a notification message or perform some specified actions.
Packet Analyzer Pro edition is an advanced packet analysis and sniffing tool with powerful protocol decodes capabilities. It captures and analyze all traffic transport over both Ethernet and WLAN network with results displayed in simple English.