PA Server Monitor is a Windows service that monitors the health and availability of Windows servers, network services (on Windows, Linux and other operating systems), and devices. No agents are needed to monitor remote servers. Rich reporting too.
Downloads: 20809 - Demo - Download Now

MegaPing is the ultimate must-have toolkit that provides all essential utilities for Information System specialists, system administrators, IT solution providers or individuals.It includes: Comprehensive Security Scanner, Host monitor, and more.
Downloads: 56890 - Shareware - Download Now

Userbooster Light is an universal LDAP client providing system administrators with all they need for managing directory data.
Downloads: 18101 - Shareware - Download Now

Mail Access Monitor is a simple tool that analyses mail server logs and shows how much traffic is being used by e-mail, who sends and receives most messages, where the messages are being send to and if e-mail abuse takes place in your office.
Downloads: 23419 - Shareware - Download Now

ShaPlus Bandwidth Meter runs in the system tray and displays the current, daily and monthly bandwidth usage for selected network adapters. This will be useful for people with limited bandwidth/month internet connection.
Downloads: 30779 - Freeware - Download Now