subway servers

Monitoring servers/services with ping or a socket connection (TCP or UDP).

A library to interface with Half-Life2 Dedicated Servers

synchronize your computer's clock from various time servers as often as you want

NTPScape is a tool for exploring and debugging NTP servers.

XWall is a spam filter for Exchange and other SMTP servers.

Automates the backup and restore of print configuration data on print servers.

SSH Tunnel Client allows to connect to different SSH-Servers.

Use winamp as a source for MP3/Vorbis streaming servers with this tool.

ZABBIX is a software that monitors servers and applications.

cmxSyncTime synchronizes your PC clock to the NIST internet servers