Monitornator - Server monitoring made simple
Logwatch - Logwatch is a customizable log analysis system.
OpsDash - All-in-one solution for monitoring servers, services, uptime and databases. Curated Dashboards. Rule-based alerting.
Growl for Windows - Growl for Windows is a Windows-compatible version of https://alternativeto.
NIXStats - SaaS monitoring tool for window/linux servers and websites. Think up-time robot but with more features.
Log Parser Lizard - Download this ETL log parser for automated SQL querying any text based data or system logs like Web Server logs, Windows System Events and application log files.