SolarWinds Log Analyzer - SolarWinds Log Analyzer tool provides comprehensive log management and analysis with out-of-the-box visibility into performance and availability. Free trial!
Pingdom - With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.
BLËSK - BLËSK is a suite of applications for network monitoring and management.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Nagios - Complete monitoring and alerting for servers, switches, applications, and services
Better Uptime - We call you when your website goes down