Grafana - Data visualization & Monitoring with support for Graphite, InfluxDB, Prometheus, Elasticsearch and many more databases
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.
Datadog - See metrics from all of your apps, tools & services in one place with Datadog's cloud monitoring as a service solution. Try it for free.
Mixpanel - Mixpanel is the most advanced analytics platform in the world for mobile & web.
Prometheus - An open-source systems monitoring and alerting toolkit.
Matomo - Matomo is an open-source web analytics platform