# PostHog

> PostHog is an all-in-one, open-source developer platform that bundles product analytics, web analytics, session replay, feature flags, A/B testing, experiments, surveys, error tracking, a customer data platform, and a data warehouse into a single stack engineers can self-host or run in the cloud. Founded in 2020 by James Hawkins and Tim Glaser through Y Combinator, it lets product engineers track usage, ship features, and keep customer data in one place rather than stitching together a dozen SaaS tools. The company reached unicorn status in 2025 with a $75M Series E at a $1.4B valuation.

- **Founded:** 2020
- **Headquarters:** San Francisco, California, United States
- **Founders:** James Hawkins (Co-founder & CEO), Tim Glaser (Co-founder & CTO)
- **Team size:** ~110 employees (100% remote across 20+ countries)
- **Products:** Product Analytics, Web Analytics, Session Replay, Feature Flags, Experiments / A/B Testing
- **Notable:** Reached #1 on Hacker News with its launch in February 2020., Grew to 190,000+ companies and ~250,000 engineers on the platform., Adopted by roughly 65% of every Y Combinator batch.

## Products & services

- **Product Analytics** — Autocapture or manually instrument event-based analytics with funnels, paths, retention, and SQL to understand user behavior.
- **Web Analytics** — Privacy-friendly, cookie-less web traffic and conversion analytics.
- **Session Replay** — Watch real user sessions on web and mobile to diagnose bugs and understand behavior.
- **Feature Flags** — Safely roll out features to specific users or cohorts and toggle them remotely.
- **Experiments / A/B Testing** — Run statistically rigorous A/B and multivariate tests tied to product metrics.
- **Surveys** — In-app NPS, CSAT, and custom surveys to collect user feedback.
- **Error Tracking** — Capture and triage exceptions alongside the rest of your product data.
- **Data Warehouse & CDP** — Import data from external sources with one click, query it with SQL, and pipe events out to other tools.
- **Max AI** — An AI product assistant that helps debug code, build queries, and surface insights from your data.

## Achievements

- Reached #1 on Hacker News with its launch in February 2020.
- Grew to 190,000+ companies and ~250,000 engineers on the platform.
- Adopted by roughly 65% of every Y Combinator batch.
- Reached unicorn status with a $1.4B valuation at its 2025 Series E.
- Raised ~$194M in total funding across seven rounds.
- One of the most-starred open-source analytics projects on GitHub.

## Latest updates

- **2025-09** — Raised a $75M Series E led by Peak XV Partners at a $1.4B valuation, becoming a unicorn and funding an 'Act 2' push into AI-powered dev tools.
- **2025-06** — Raised a $70M Series D led by Stripe at a ~$920M valuation.

## Links

- Website: https://posthog.com
- LinkedIn: https://www.linkedin.com/company/posthog
- Twitter/X: https://twitter.com/posthog
- GitHub: https://github.com/PostHog
- YouTube: https://www.youtube.com/@posthog
- Instagram: https://www.instagram.com/posthog
- Facebook: https://facebook.com/PostHog

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Profile page: https://yespress.io/posthog
Published by YesPress — https://yespress.io
Last updated: 2026-06-13