glogg - glogg is a multi-platform GUI application to browse and search through long or complex log files.
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.
klogg - klogg is the fork of glogg - the fast, smart log explorer.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
BareTail - BareTail is a real-time log file monitoring tool. Features Real-time file viewing
Better Uptime - We call you when your website goes down