Hyperping - Cheap uptime and performance monitoring with detailed reporting and flexible alerting
Platypus - Realtime server monitoring and reporting
Monitornator - Server monitoring made simple
Healthy Servers - Making server monitoring easy
NIXStats - SaaS monitoring tool for window/linux servers and websites. Think up-time robot but with more features.
PING - PING (Partimage Is Not Ghost) is a free software Linux-based live CD ISO built upon the partimage...