Traffaret 

Traffaret is the easy to use tool that monitors bandwidth usage. It allows you to quickly and easily set up and run a monitoring network connection characteristics: speed, transferred data, opened connections and so on.
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MZL & Novatech Traffic Statistics 

MZL & Novatech TrafficStatistic shows accumulated bandwidth usage of a network interface like ethernet, DSL or PPP in tray. It generates IP traffic statistics IPDR data and can generate reports on his top bandwidth consumers cut by host and service.
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Time Interval Report 

Time Interval Report shows traffic cut by host and service for any time interval. The user can query data with a precision of one minute, eg from 02/25/2004 04:25 to 03/03/2004 14:36. It is a plugin for the freeware MZL & Novatech TrafficStatistic.
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