TrafMeter   
http://lastbit.com

TrafMeter is a Windows-based tool providing realtime traffic accounting and monitoring. You can use it to count useful traffic of your computer (it's free!) or use to build the traffic accounting system for all PCs in your office LAN. It makes easy to count custom IP packets and troubleshooting problems saving your efforts as a network administrator. In TrafMeter, you can set unlimited number of filters for captured traffic, defining network packets which are used for tracking/reporting. It supports a creation of rulesets for various monitoring purposes. The rulesets can be used for single hosts, subnets, as well as specific groups of hosts - i.e. all hosts in/not in your LAN, specific IP protocols (ICMP,TCP,UDP,OSPF,etc). In addition, TrafMeter allows TCP/UDP port filtering. It includes real-time presentation of traffic activity via graphical charts. Each filter is represented by a unique color, which allows the webmaster and/or administrator to easily 'see' the Internet connection usage of individual users. TrafMeter supports a tracking of network packets for the different filters, letting you analyze and comment on the monitored traffic (which may include MAC addresses from Ethernet headers and the ToS field from IP headers). TrafMeter allows to track visited websites by its name using HTTP Host Header Logging. Report generation via XML, or to the more common database (Microsoft SQL Server, Oracle, MySQL) is present as well.

NetCom   
http://www.routix.net

NetCom is a software for system administrators, IT-professionals and advanced users. With NetCom you can give full control over local area network (LAN) and over INTERNET connections. NetCom introduces easy-to-use packets-level filtering and managment software and improved remote management features and remote scripting. NetCom is an extensible firewall, traffic controller, QoS, Bandwidth, Bridging, Redirection, NAT and statistics software for the Microsoft Windows NT, XP, 2000 and 2003 operating system. NetCom provides firewall that helps protect network resources from viruses and hackers. NetCom provides a unified management console that simplifies security and access management. You can configure access rules to apply to all traffic, to a specific set of protocol definitions, or to all traffic except selected protocols. - support for remote scripting (with Microsoft Active Scripting) and provide useful remote administration console; - support set of protocols (IP, TCP, UDP, ARP, ICMP...). You can create any rules, based on this protocols; - support MAC-level (ETHERNET-frames) handling; - support incoming and outgoing traffic counting. You can create any rules based on this counters; - support TCP and UDP ports handling; - support IP addresses handling; - support TIME-based handling (rule evaluates to TRUE only at specified time); - automatic counters reset with specified interval (every N hours, N days, N weeks, N month, N years); - event-based actions executions (every rule can execute many specified scripts or programs, for example for writing counters to database or XML-file). This actions can be executed before counters will be resetted or with specified interval; - also NetCom have many other features. For more information you can go to download section and download CHM-help file from NetCom...