What is posthog?

PostHog is an open-source platform that bundles together a wide range of tools product teams need to understand how people use their software. Instead of juggling separate services for analytics, error tracking, user recordings, and feature rollouts, you get all of them in one place. The goal is to help teams build better products by keeping all their customer and usage data in a single system. At a high level, you add a small piece of tracking code to your website or app using one of the provided libraries for popular languages like JavaScript, Python, or React. Once installed, the platform automatically captures user actions, errors, and other data. You then use a dashboard to watch session replays of real users interacting with your product, run experiments to see if a change improves your metrics, control who sees new features, and send surveys, all from the same interface. This would appeal to a startup founder who wants to know which features users actually engage with, or a product manager running an A/B test to see if a redesigned checkout flow increases sales. It is also useful for a small engineering team that wants to catch errors early, roll out a new feature to a limited audience first, and understand user behavior without stitching together five different tools. The project offers a free cloud tier that handles up to a million events per month, which is enough for many small projects. If you prefer to run it yourself, there is a self-hosted option, though the team recommends it only for smaller-scale use and does not provide support for those deployments. The core code is open source under a permissive license, with some enterprise features licensed separately.