Overview
PostHog is a product analytics platform developed by PostHog Inc. and released under an open-source license. It bundles event analytics, session replay, feature flags, experimentation, surveys and a data warehouse into a single suite with a shared event model.
Engineering-led product teams typically install the JavaScript snippet or a backend SDK, then use the same data to analyse funnels, watch replays of problem sessions and roll out features gradually. It is often chosen as a consolidated replacement for several separate analytics and flagging tools.
Key features
- Product analyticsTrends, funnels, retention, paths and SQL queries over captured events.
- Session replayRecordings of real user sessions linked to events, errors and console logs.
- Feature flagsTargeted rollouts and remote configuration with SDKs for common languages.
- ExperimentsA/B and multivariate tests that reuse the same events and flags.
- SurveysIn-app surveys targeted by user properties or behaviour.
- Data warehouseSync external sources such as Stripe or a database and query them alongside product events.
Best for
- Startups that want analytics, replay and feature flags without stitching several vendors together
- Engineering-led product teams comfortable writing SQL and instrumenting events
- Teams that value an open-source codebase and transparent usage-based pricing
Pricing
Usage-based. Each product has a monthly free allowance; usage above it is billed per unit, with volume discounts and optional add-ons.
| Plan | What you get |
|---|---|
| Free | Monthly free usage of each product with limited projects and data retention. |
| Pay-as-you-go | Usage beyond the free allowance billed per event, recording or request, with spending caps. |
| Enterprise | Custom terms, advanced permissions and dedicated support. |
Prices and plan limits change often. Check the official website for current pricing. Last reviewed Oct 3, 2026.
Pros & cons
Pros
- Broad suite of tools sharing one event and user model
- Generous free usage allowance with per-product billing limits
- Open-source codebase and detailed public documentation
- Strong SQL access to raw event data
Cons
- Breadth of products can make the interface feel dense for non-technical users
- Usage-based bills can grow quickly on high-traffic sites without careful sampling and caps
- Self-hosting is limited to a small-scale hobby deployment
PostHog alternatives
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Data Freemium Visit
Mixpanel
Event-based product analytics for funnels, retention and user behaviour.
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Data Free trial Visit
Plausible Analytics
Lightweight, cookie-free and privacy-focused website analytics.
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Dev Tools Freemium Visit
Sentry
Error tracking and performance monitoring for application developers.
-
Data Open source Visit
Metabase
Open-source business intelligence for dashboards and self-serve queries.
Related resources
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Try PostHog
Each product has a monthly free allowance; usage above it is billed per unit, with volume discounts and optional add-ons.