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Open-source product analytics and the Product OS
Last updated July 19, 2026
Overview
PostHog is an open-source product platform with analytics, session replay, feature flags, experiments, error tracking, and a data warehouse—plus AI tooling to help teams ship and debug faster.
Features
- Product analytics, session replay, and heatmaps
- Feature flags, experiments, and surveys
- Error tracking, CDP, warehouse, and AI observability
Best use cases
- Understanding product usage and user journeys
- Running A/B tests and feature flag rollouts
- Debugging issues with replay and error tracking
Pros
- Well-known product with broad adoption
- Actively maintained and improved
- Useful defaults for most users
Cons
- Advanced usage may require a paid plan
- Best results still need clear prompts
Alternatives
View all alternatives