Web & product analytics. PostHog

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Open source · Open source product analytics

PostHog

Open source product analytics with session replay, flags and CDP

Verified: 2026-07-03

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Best for

  • technical teams seeking all-in-one product stack
  • self-host or PostHog Cloud with data control
  • startups and scale-ups with developer-first approach

Strengths

  • Product analytics, session replay, feature flags and surveys in one
  • Open source with self-host or PostHog Cloud option
  • Generous free cloud tier (1M events/mo)
  • Good API and modern stack integration (dbt, warehouse)

Weaknesses

  • Self-host requires maintenance (ClickHouse, infrastructure)
  • Less mature in enterprise marketing analytics than GA4/Adobe
  • Smaller implementation partner ecosystem

When to choose

  • You want product analytics + replay + flags without multiple vendors
  • You have engineering for self-host or accept PostHog Cloud
  • Limited budget - free tier or open source

When to avoid

  • You need native Google Ads and ad ecosystem integration
  • No technical resources for self-host
  • Enterprise compliance requirements without your own PostHog assessment

Pricing (indicative)

Cloud: 1M events/mo free; above pay-as-you-go. Self-host - €0 license + TCO.

Features

  • No - Marketing reports
  • Yes - Product analytics
  • Yes - Privacy / EU hosting
  • No - Built-in CMP / consent
  • Yes - Session replay
  • Yes - A/B experiments
  • Yes - Raw data export
  • Yes - Free plan

Integrations

Segment, Snowflake, BigQuery, Slack, Zapier, API

Sources and methodology

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For informational purposes. Verify pricing and features with vendors before purchase.