Platypus - Realtime server monitoring and reporting
Sensei - Create and sell online courses with Sensei LMS plugin for WordPress - engaging lessons, interactive quizzes, and simple student management.
OpsDash - All-in-one solution for monitoring servers, services, uptime and databases. Curated Dashboards. Rule-based alerting.
Web Uptime - Multi-location website uptime monitoring
Healthy Servers - Making server monitoring easy
NIXStats - SaaS monitoring tool for window/linux servers and websites. Think up-time robot but with more features.