PostHog

PostHog is built specifically for product engineers who need comprehensive behavioral insights. The platform consolidates event tracking, session recordings, feature flags, A/B testing, and user surveys into one ecosystem. PostHog offers comprehensive autocapture functionality that automatically tracks user interactions without manual instrumentation. The core product analytics engine is open source under an MIT license. PostHog Cloud offers the full suite with more advanced capabilities and ongoing support, with free tier covering 1 million events, 5k recordings, 1M flag requests, 100k exceptions, and 1500 survey responses per month.