Connection Monitor 1.2 (by Csgware Corp)
Monitor you Internet Link when Up and When down

Connection Monitor 1.2 (by Csgware Corp)
Monitor you Internet Link when Up and When down

Guard Web 1.0 (by GolanSoft)
monitor a site data and connection time and alert threw mail or phone.

Guard Web Pro 1.0 (by GolanSoft)
monitor a site data and connection time and alert threw mail or phone.

connectionGuard 2.2.9 (by connectionGuard.com)
Monitor any Internet connection in real time. Prevent unauthorized traffic.

LinkAlertPC 2.50 (by InBloom Products)
The cost effective link monitor and alert notification system

Net Check 1.1.0 (by SoftHunters)
An easy solution to check if there is an active Internet connection.

Blue Internet Monitor 3.8 (by Blue Software)
Monitors Internet connection cost and bandwidth. Freeware!

Connect and Shar 1.02 (by PPP Infotech Ltd)
Control, monitor modem and Internet connection from any remote computer

DunStats 1.0 (by Camtech 2000)
Monitor everything you always wanted to know about your Internet Connection

Server Website Monitoring Tool 2.1.0.8 (by Web Services)
Network server IP ping internet connection speed downtime monitoring software

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.