Choosy - Choosy opens links in different browsers as specified, according to rules, set by the user.
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.
Finicky - A MacOS app for creating rules that decide which browser is opened for every link that would open...
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Browser Select - Browser Select is a utility to dynamically select the browser you want instead of just having one...
Better Uptime - We call you when your website goes down