PostHog

PostHog builds an open-source product and data platform designed for engineers. Its flagship offering, the PostHog Product & Data Platform, combines product analytics, session replay, feature flags, experimentation and a built-in data warehouse in a single toolset, in order to help development teams understand their users and ship changes with confidence. The platform is used by more than 190,000 teams, and 65% of every Y Combinator batch uses PostHog.

The company positions itself against the more familiar habits of the SaaS industry. It charges on a usage basis with generous free tiers, publishes its pricing openly and does not use aggressive sales teams; engineers can try the products without a sales call. Product analytics, the original foundation of PostHog, remains at the core of the platform, with session replay, feature flags, experiments and a data warehouse built around it.

Internally, PostHog operates a notably transparent culture. The company handbook is public in full, covering the roadmap, its approach to compensation and its sales strategy. Stated principles include treating people the way one would want to be treated, making decisions on the basis of what is useful to people building products, and running the business to be sustainable rather than chasing growth at all costs. The company says it has never had layoffs.

PostHog's stated mission is to equip every developer to build successful products by giving them the data and tools to understand their users. Its long-term ambition is to build a generational company that reaches $100B in value by being genuinely useful.