Open-source Product Analytics App
"PostHog provides open-source product analytics, built for developers. Automate the collection of every event on your website or app, with no need to send data to 3rd parties.
In our view, third-party analytics does not work anymore in a world of cookie laws, GDPR, CCPA, and many other four-letter acronyms. There should be an alternative to sending all of your customers' personal information and usage data to third-parties like Google.
PostHog gives you full control over all the data from your users, while allowing anyone to do powerful analytics. This means you can know who is using your app, how they're using it, and where you lose users, among many other things."