PostHog

PostHog makes a set of tools that help software teams understand how people use their products. James Hawkins and Tim Glaser founded the company in 2020, and it went through the Y Combinator program. The team works fully remotely across many countries.

The platform started with open source product analytics. It now includes session replay, feature flags, A/B testing, surveys, error tracking, a data warehouse and web analytics. All of these share the same event data, so teams can move from a chart to the recordings and experiments behind it without switching tools.

PostHog is used mostly by engineers and product teams at startups and growing software companies. It offers a generous free tier and charges based on usage. The company is known for publishing its internal handbook, pricing and many company details in public. Its website and docs use a playful style with hand drawn hedgehogs. It has raised several funding rounds and remains privately held.