FirePlotter 1.2 (by GISS (UK) Ltd)
A real-time session bandwith monitor for Cisco and FortiNet firewalls

FirePlotter 1.2 (by GISS (UK) Ltd)
A real-time session bandwith monitor for Cisco and FortiNet firewalls

Bandwidth Meter Pro 2.1.0.491 (by BANDWIDTH-METER.NET)
An easy to use network software for bandwidth usage monitoring and reporting.

MZL & Novatech Traffic Statistics 1.2.0.1 (by MZL & Novatech TrafficStatistic)
DSL traffic statistics and IP bandwidth usage reporting cut by host and service

MZL & Novatech Traffic Statistics 1.2.0.1 (by MZL & Novatech TrafficStatistic)
DSL traffic statistics and IP bandwidth usage reporting cut by host and service

PRTG - Paessler Router Traffic Grapher 5.2.0.581 (by Paessler AG)
Monitor and classify bandwidth and network usage. Easy to use Windows software.

PRTG - Paessler Router Traffic Grapher 5.3.0.833 (by Paessler AG)
Monitor and classify bandwidth and network usage. Easy to use Windows software.

MZL & Novatech Traffic Statistics Linux Server 1.2.0.0 (by MZL and Novatech Traffic Statistics)
IP traffic statistics and bandwidth usage reporting cut by host and service

TrafMeter 6.4 (by LastBit Software)
IP traffic accounting utility, traffic shaper and packet filtering firewall

Bandwidth Monitor 2.9.0.623 (by BWMONITOR.COM)
Monitor your WAN and LAN bandwidth and display real-time data transfer rates.

Time Interval Report 1.2 (by MZL & Novatech TrafficStatistic)
Traffic statistics cut by host and service for arbitrary time intervals

Netoscope 1.6 (by Basta Computing, Inc.)
Netoscope: Internet server monitor.

The Dude 1.1 (by MikroTik)
The Dude will layout your network on a map and will monitor services of devices

Sniff-em Packet sniffer 1.12 (by YASC LTD)
Sniff'em 1.12 is a Windows based allround Packet sniffer and Network analyzer.

SNMPTest 1.03 (by Noel Danjou)
Query and monitor any SNMP-compatible device

MailMonitor 1.6.3 (by DigiArch.org)
If you have mail problems, MailMonitor shows you what's going on at port level.