PostHog

An all-in-one, developer-focused product platform: analytics, session replay, flags, experiments and more.

Free plan + paidOpen sourceSelf-hostableProduct analytics tools

Verified facts: 4 of 4
Alternatives ranked: 9
Approved reviews: 0
Visits sent from here: 0

About PostHog

PostHog started as an open-source alternative to Mixpanel and has grown into a broad suite aimed at engineers and product-minded teams. One install gives you product and web analytics, session replay, feature flags, A/B tests, surveys, error tracking, a data warehouse and logs, all sharing the same user and event data. Its pricing is usage-based per product with a free allowance that renews every month, and the company says most customers never pay. There is no per-seat charge. The interface is dense and assumes some comfort with SQL and engineering concepts, which suits startups well but can overwhelm marketing teams. PostHog Cloud runs in the US or EU; a hobby self-hosted deployment exists for small setups, though the company recommends Cloud for anything serious. Its public handbook, docs and frequent releases are a big part of its appeal. It runs in the browser with SDKs for web, mobile and most backend languages.

Best for: Startups and engineering-led teams wanting analytics, replay and flags in one tool.

What works

Generous monthly free allowance across every product
Analytics, replay, flags and experiments share one dataset
Transparent usage pricing with no seat fees
Source code is public and a hobby self-host option exists

Why people leave

Busy interface that suits technical users more than marketers
Self-hosting is limited to a small hobby deployment
Usage bills can grow fast on high-traffic products

Why people left PostHog

In reviewers' own words, from reviews of the apps they moved to. These are their opinions, not ours.

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PostHog: common questions

Is PostHog free?

PostHog has a free plan and paid plans.

Is PostHog open source?

Yes. The source code is on GitHub at PostHog/posthog. You can also run it on your own server.

What platforms does PostHog run on?

PostHog is available for Web and Self-hosted.

What are the best alternatives to PostHog?

The highest-ranked PostHog alternatives right now are Mixpanel, Amplitude and OpenReplay. See the full ranked list for pricing, platforms and verified facts.

See all 9 PostHog alternatives

PostHog facts

4 of 4 verified

Free analytics allowance: 1M events/month; Checked Oct 25, 2026posthog.com(opens source in a new tab); “What you get for free, every month Resets monthly. Same allowance whether or not you have a card on file. + Analytics 1M events”
Free session replay: 5K recordings/month; Checked Oct 25, 2026posthog.com(opens source in a new tab); “+ Analytics 1M events Session replay 5K recordings”
Free feature flags: 1M requests/month; Checked Oct 25, 2026posthog.com(opens source in a new tab); “+ Analytics 1M events Session replay 5K recordings Feature flags 1M requests”
Self-hosting: Hobby deployment available; Checked Oct 25, 2026posthog.com(opens source in a new tab); “but there are two commands for interacting with the hobby deploy”