Testim - Stable, self-healing, end-to-end test automation via machine learning. Testim helps accelerate the delivery of high-quality software. Speed up test-authoring and improve the stability of automated, end-to-end tests.
Site Down - Site down outage and downtime reports from SiteDown.co
Ghost Inspector - Easily create automated browser tests for your websites and web apps. Ensure everything works and looks the way it should. No coding required. 14 day free trial!
Is it Down? - Is it down can check if a website is down or is it just your PC that can not access it.
Selenium - Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily, it is for automating web applications for testing purposes, but is certainly not limited to just that.
UPDOWNtoday - UPDOWNTODAY allows you to check whether the website is down or not.