Pager Team - Get system outage notifications instantly
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.
Kontentino - Social media management tool for agencies & clients
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Buffer - Buffer makes it super easy to share any page you're reading. Keep your Buffer topped up and we automagically share them for you through the day.
Better Uptime - We call you when your website goes down