Make OS X Great Again - Fix the things that make 🍎 OS X annoying
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.
Alfred - Alfred is an award-winning app for macOS which boosts your efficiency with hotkeys, keywords, text expansion and more. Search your Mac and the web, and be more productive with custom actions to control your Mac.
UptimeRobot - Free Website Uptime Monitoring
uBar - The Dock replacement for the Mac.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring