I started implementing PostHog for my company and it's been quite awesome! I love how it automatically captures events on my website and I can use that info to determine who signed up on my app and where they came from. The fact that you can host PostHog yourself is excellent because you no longer have to rely on Google Analytics or some third-party owning your data. Also, self-hosting allows you to get around third-party cookie storage restrictions that are becoming more common. They have a startup plan which allows you to use the product for a whole year for free! The only down side is that to get the Zapier integration to work with the self-hosted version, you need an enterprise license.