ActivXperts Network Monitor monitors servers and workstations for availability.

ActivXperts Network Monitor has an impressive list of built-in checks, including: Active Directory, ADSI, Disk Drive, Disk Space, Event Log (with content checking), Exchange 2000, File Existence (with content checking), FTP site, HTTP(s) (with content checking), ICMP/Ping, MS SQL Database, Novell NDS
NTDS (NT4 compatible DS), ODBC Database, Oracle Databases (SQLNet), POP3 Mail server, Printer, Process, Service, SMTP Mail server, TCP port (with handshaking), UDP, UNIX Shell Script (RSH), Users & groups, VBScript (custom scripts) and WMI.

You can even write your own check routines in VBScript, WMI and ADSI and add them to the software configuration.

Your current LAN/WAN server status is displayed by the graphical client application, which can be installed on any computer.
When problems are detected, you're immediately notified by network message, e-mail, pager, or SMS message, before problems get out of hand. When a failure is detected, it will try to recover the problem by running a system administrator defined program.

The core of the product runs as a service on Windows NT/2000 and higher platforms. Results can be viewed by the client application, which runs on any 32 bit Microsoft platform.
System- and network administrators can run the client application simultaneously on their desktop PCs.

The software has advanced logging and report capabilities.