Is PostHog really open source?

Yes, PostHog is open source and available on GitHub. You can self-host it on your own infrastructure for complete data ownership.

How many free events does PostHog include?

The PostHog cloud plan includes 1 million free events per month. You only pay for usage beyond that threshold.

PostHog

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Open-source product analytics with session replay, feature flags, and A/B testing — all in one self-hostable suite.

FreemiumAI Analytics

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What is PostHog?

PostHog is an open-source product analytics platform that combines event tracking, session replay, feature flags, A/B testing, and product surveys in a single self-hostable suite. It is built for engineering and product teams that want full data ownership without managing multiple tools.

What can PostHog do?

Product Analytics
Track user events, build funnels, retention curves, and user paths to understand how people use your product.
Session Replay
Watch recorded user sessions with click maps and rage-click detection to diagnose UX issues from real usage data.
Feature Flags
Roll out features to specific user segments with percentage-based or property-based targeting and local evaluation for zero-latency reads.
A/B Testing and Experiments
Run multivariate experiments with built-in statistical significance tracking to validate product changes before full release.
Open Source and Self-Hostable
Deploy PostHog on your own infrastructure for complete data control, or use the managed cloud with 1M free events per month.

Who is PostHog for?

Product teams: Set up funnels and retention analysis on real user behavior data to identify where users drop off during a new onboarding flow.
Engineering teams: Use feature flags to ship changes progressively and roll back instantly without a full deployment cycle.