PostHog

PostHog is an all-in-one, open-source product analytics platform that helps engineering teams understand user behavior, measure product performance, and make data-driven decisions. It combines session recording, feature flags, A/B testing, heatmaps, and comprehensive analytics in a single platform that can be self-hosted or used as a cloud service. The platform is designed for product teams who want complete control over their data while gaining deep insights into how users interact with their applications, enabling faster iteration and better product decisions.