PostHog

posthog.com

PostHog started as open source product analytics and has evolved into a comprehensive product and data toolkit used by over 70,000 teams. The platform offers a suite of tools including product analytics, web analytics, session replay, feature flags, experiments, and surveys, all designed to help developers build successful products. PostHog differentiates itself with a generous free tier, usage-based pricing, and a commitment to transparency and open-source principles. The company has gained significant traction since its launch in Y Combinator's W20 batch, with a strong community and a focus on continuous improvement and innovation in product development.