PostHog is a platform that collects analytics, errors, replays, and business data from over 900 sources so product teams can query and act on it. It is aimed at developers, product managers, and data analysts who need a single place for product insights. What sets PostHog apart is its integrated AI observability and the ability to run queries directly from editors or the terminal, eliminating context‑switching. The platform also offers no‑code A/B testing, feature flags, and a built‑in data warehouse with SQL and BI tools.