MySQL - The world's most popular open source database
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.
PostgreSQL - PostgreSQL is a powerful, open source object-relational database system.
Matomo - Matomo is an open-source web analytics platform
SQLite - SQLite Home Page
Mixpanel - Mixpanel is the most advanced analytics platform in the world for mobile & web.