PostHog

PostHog is a suite of developer tools for product engineers, combining analytics, session replay, feature flags, and more in one platform. Free tier, usage-based pricing, and self-hosted open source available.

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What PostHog is

PostHog is a suite of developer tools for product engineers. It combines product analytics, session replay, feature flags, and related products into one platform so teams can build, test, measure, and ship from the same place.

The site positions PostHog as a product operating system rather than a single analytics tool. Its product pages emphasize connected workflows: analytics can lead into session recordings, flags can be measured with integrated analytics, and the data warehouse helps teams combine product events with external data such as payments, tickets, and exceptions.

PostHog offers a generous free tier and usage-based pricing after that tier, with billing limits available to help avoid unexpected bills. The company also says the product is available as an open source option for self-hosting.

Core capabilities

Product analytics

Track usage, retention, and feature adoption with product analytics, including autocapture for clicks and pageviews and retroactive event definitions called actions.

Session replay

Review real user sessions to see what users clicked, where they got stuck, and what broke, with automatic capture and no manual tagging required.

Feature flags

Ship changes with feature flags, target cohorts, roll back quickly, and measure impact through the rest of the platform.

Integrated data model

Use the data warehouse and built-in data stack to connect product data with information from outside the product, such as payments, support tickets, or error tracking.

Usage-based pricing

Start on the free tier, then move to usage-based pricing with billing limits per product and monthly free volume that continues after upgrading.

Cloud and self-hosted options

Choose cloud or self-hosted deployment, with the site noting an open source MIT-licensed product for teams that want to run it themselves.

Common ways teams use PostHog

Analyze product behavior
Use product analytics to understand usage, retention, and feature adoption, then move into session replay when you need to see why a metric changed.
Debug user journeys
Watch individual sessions to diagnose where users get stuck, what they clicked, or what broke, especially when analytics alone do not explain the issue.
Control deployments safely
Release new features behind flags, target specific cohorts, and measure the effect of a rollout before exposing it to everyone.
Unify customer data
Bring together product events with warehouse data, payments, tickets, and exceptions so product decisions are based on more than in-app activity alone.
Adopt incrementally
Start small on the free tier and expand into paid usage only when product volume or advanced features require it.

Pros and Cons

Pros

Combines multiple product tools in one platform, including analytics, replay, feature flags, and more.
Connects product analytics with session replay and other products, which supports investigation from chart to recording.
Offers a generous free tier and usage-based pricing with billing limits.
Allows teams to start in the cloud or self-host the open source product if needed.
Uses autocapture and retroactive event definitions, reducing manual tracking work.

Cons

The site provides limited detail on integrations, so supported sources and destinations are not fully clear from the collected pages.
Some product capabilities are described only at a high level on the pages collected here, so teams may need the docs for setup and implementation details.

FAQ

What is PostHog for?

PostHog is built for product engineers and teams that want analytics, session replay, feature flags, and related tools in one place. The site also shows product pages for product analytics, session replay, and feature flags as core parts of the platform.

Does PostHog have a free plan?

The pricing page describes a generous free tier, usage-based pricing after the free tier, and no credit card requirement to get started on the free plan.

How do the products work together?

The product pages describe connected workflows such as jumping from analytics into session recordings, using feature flags to control rollouts, and measuring impact through integrated analytics and experiments.

Can PostHog be self-hosted?

The site says PostHog offers a cloud product and also mentions an open source product that you can self-host if needed.