PreFlight - Preflight is an Automated Web Testing tool. Allows everyone to automate Web UI tests.
Google Analytics - Improve your website to increase conversions, improve the user experience, and make more money using Google Analytics. Measure, understand and quantify engagement on your site with customized and in-depth reports.
AbTest.io - A free url shortener with A/B testing features
Mixpanel - Mixpanel is the most advanced analytics platform in the world for mobile & web.
Marpipe - Automate Your Ad Testing, Optimize Your Creative
Matomo - Matomo is an open-source web analytics platform