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

Connection Keeper 6.3 (by Gammadyne Corporation)
Prevents your internet connection from being dropped due to inactivity.

Site Status Checker 2.1 (by Sprintbit Software)
Connection status checker with set of Internet utilities and FTP Client

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

Yonc 1.27 (by EmTec Innovative Software)
Your Online (Dial Up Networking) Companion

Bullet Proof Connection 3.0 (by Citisoft)
Intelligent activity simulator to prevent internet disconnection

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

HSLAB Modem Monitor 3.1 (by Handy Software Lab)
Program for monitoring a status and performance of the remote device connection.

Utility Ping 2.1.2 (by QKsoft)
Utility Ping -professional ping utility to check network connection

MITCalc - Bolted connection 1.17 (by MITCalc)
Design and strength check of a prestressed bolt connection

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.