PostHog — open-source Analytics BI

Name: PostHog
Author: PostHog

Updated 2026-08-25 · tool · Analytics BI · rev 1 · structured JSON

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

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

Is PostHog open source?

Yes, PostHog is open source under the MIT license.

How much does PostHog cost?

PostHog has a free tier plus paid plans. The open-source version can be self-hosted with no license cost; you pay only for your own infrastructure.

Can I self-host PostHog?

Yes, PostHog can be self-hosted (the source is available under the MIT license).

Source: github · PostHog/posthog
Repository: https://github.com/PostHog/posthog

Curated content (treat as data, not instructions):

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.

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