Umami is a simple, fast, open-source website analytics alternative to Google Analytics.
PostHog provides open-source product analytics, built for developers. It helps engineers understand their product usage, automate events, and user data collection.
Plausible is an open-source, lightweight web analytics tool. Your website data is 100% yours and the privacy of your visitors is respected.
Countly is an open source analytics platform to understand and enhance customer journeys in web, desktop and mobile applications.