Platypus - Realtime server monitoring and reporting
NIXStats - SaaS monitoring tool for window/linux servers and websites. Think up-time robot but with more features.
OpsDash - All-in-one solution for monitoring servers, services, uptime and databases. Curated Dashboards. Rule-based alerting.
Healthy Servers - Making server monitoring easy
Web Uptime - Multi-location website uptime monitoring
PING - PING (Partimage Is Not Ghost) is a free software Linux-based live CD ISO built upon the partimage...