PostHog is an all-in-one developer platform offering product analytics, web analytics, session replay, error tracking, feature flags, experimentation, surveys, and a data warehouse in one integrated stack.

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.
Open-source product analytics with feature flags and experimentation
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Enterprise Research Platform Powered by AI Agents
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Sprig is a unified research platform built for UX teams who need fast, relevant user insights. Powered by AI, Sprig helps you do more research in less time by capturing and analyzing real-time feedback and behavioral data at scale.
The #1 feature management and experimentation platform
Founded
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Statsig is the leading product experimentation platform founded by former Facebook engineers, helping businesses use data to ship fast and build better products through feature flags, A/B testing, and statistical analysis.
Open-source feature management for controlled releases
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Unleash is an open-source feature flag solution that enables development teams to manage feature releases, conduct experiments, and control feature rollouts with granular targeting and environments.