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PostHog

Open-source product analytics, session replay, feature flags and A/B testing.

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About this product

PostHog is the all-in-one product analytics platform designed for engineers. It combines event tracking, funnels, retention analysis, session replay, feature flags, A/B testing, and surveys — all under one roof, self-hostable and open-source.

Unlike Mixpanel or Amplitude, PostHog lets you own your data. Deploy on your own infrastructure or use PostHog Cloud with EU or US data residency.

The platform is widely adopted by engineering-led teams who want deep product insights without relying on marketing analytics or vendor lock-in. Over 50,000 companies use it including Landmark, Y Combinator and AssemblyAI.

Key Features

  • Event-based analytics with funnel and retention analysis
  • Session replay with heatmaps and rage-click detection
  • Feature flags with percentage rollouts and targeting
  • A/B testing with statistical significance tracking
  • Open-source and self-hostable on your infrastructure