**Tools** (the functional capabilities):
- [Product analytics](https://posthog.com/product-analytics.md) — The measurement agents use to see what works.
- [Web analytics](https://posthog.com/web-analytics.md) — The lightweight measurement layer feeding the loop.
- [Session replay](https://posthog.com/session-replay.md) — A proactive signal — watch exactly why something happened.
- [Feature flags](https://posthog.com/feature-flags.md) — How agents roll a change out and roll it back.
- [Experiments](https://posthog.com/experiments.md) — The evaluation that proves a change worked.
- [Error tracking](https://posthog.com/error-tracking.md) — The signal that triggers a fix — every error tied to the user who hit it.

> PostHog is the platform for self-driving products. It pairs the full context of your product's data (events, errors, logs, replays, and more) with agents that find problems and ship changes with you. It includes tools for product analytics, session replay, feature flags, A/B testing, error tracking, surveys, AI observability, web analytics, a data warehouse, and more. The fastest way to integrate PostHog is with the setup wizard: `npx @posthog/wizard@latest`
