# PostHog

> Updated 2026-08-25 · type: tool · category: analytics-bi · status: active · rev 1

Product & web analytics platform: session replay, funnels, feature flags, experiments, error tracking, and AI observability — with agent/MCP support. Shows…

- Open source: yes (MIT)
- Self-hostable: yes
- Pricing model: freemium
- Best for: Developers and product teams building applications who need analytics, session replay, feature flags, and observability.
- Last verified: 2026-09-04

- **Canonical:** https://gtmstacker.com/registry/tool/posthog/
- **Source:** [github · PostHog/posthog](https://github.com/PostHog/posthog)
- **Tags:** analytics-bi, product-analytics, session-replay, feature-flags
- **Repository:** https://github.com/PostHog/posthog

## Is PostHog open source?

Yes — MIT-licensed.

## How much does PostHog cost?

It has a free tier plus paid plans.

## Can I self-host PostHog?

Yes — it can be self-hosted.


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Product & web analytics platform: session replay, funnels, feature flags, experiments, error tracking, and AI observability — with agent/MCP support. Shows what visitors did after the click.

## Provenance

- MIT core verified (39.6k★). Open-core: the `ee/` directory is proprietary; a fully-OSS `posthog-foss` fork exists.
- Surfaced via the GTM Stacker X/Twitter signal reports (the "35 marketing repos" list + named drops); license independently WebFetch-verified 2026-09-03.