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PostHog

Open-source product analytics, session replay, and feature flags

PostHog is an open-source product and data tools platform for analytics, session replay, feature flags, experiments, surveys, error tracking, web analytics, data warehouse, CDP and LLM observability workflows. It suits developer-led teams that want one integrated product OS instead of many separate tools.

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About PostHog

PostHog is an open-source product and data tools platform that combines product analytics, session replay, feature flags, A/B testing, error tracking, surveys, web analytics, data warehouse, CDP and LLM observability capabilities. Its buyer appeal is consolidation: one event pipeline and one product operating system for developer-led teams.

Pricing is generous but usage-based. The official pricing source describes a Free plan with monthly limits and 1-year retention, plus a paid pay-as-you-go plan with a zero-dollar base, no per-seat charges and free tiers on every product. Product analytics starts with 1,000,000 events free and session replay starts with 5,000 recordings free.

License and self-hosting copy should be nuanced. GitHub currently reports the PostHog repository license metadata as NOASSERTION, and the raw license distinguishes MIT Expat content outside restricted directories from enterprise-licensed areas. PostHog remains self-hostable and transparent, but buyers should model infrastructure, retention, upgrades and operations before choosing self-host over Cloud.

Pricing & Platform Specs

Pricing Summary

PostHog is an open-source all-in-one product analytics suite. It provides a generous Free tier including 1M product analytics events, 5,000 session replays, and 1M feature flag requests per month with zero seat fees. Paid usage is metered per product with volume tier discounts and hard billing caps, alongside customized Enterprise plans.

full pricing breakdown →

Supported Platforms

PostHog Cloud, self-hosted deployments, product analytics, session replay, feature flags, experiments, surveys, error tracking, web analytics, data warehouse, CDP and LLM observability.

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Alternatives

All PostHog alternatives →
Datadog logo

Datadog

Cloud-scale monitoring, security, and analytics platform for modern infrastructure.

Datadog is a cloud observability and security platform that unifies metrics, traces, logs, RUM, synthetics, APM, and security signals. Current pricing pages list 1,000+ integrations for Infrastructure Monitoring, with Pro from $15/host/month and Enterprise from $23/host/month when billed annually.

freemium
Sentry logo

Sentry

Application monitoring and error tracking that helps developers fix issues faster.

Sentry is the leading error tracking and performance monitoring platform for developers. Captures and aggregates errors with full stack traces, breadcrumbs, and context across 100+ platforms. Used by over 100,000 organizations. Features session replay, performance tracing, and code-level profiling. A self-hosted deployment is available under FSL-1.1-Apache-2.0.

freemium
Grafana logo

Grafana

Open-source observability platform for metrics, logs, and traces visualization.

Grafana is the leading open-source platform for monitoring and observability visualization. It connects to virtually any data source — Prometheus, Elasticsearch, InfluxDB, PostgreSQL, CloudWatch, Datadog, and 150+ others — to create beautiful, interactive dashboards. Used by millions of users at companies like Bloomberg, JPMorgan, eBay, and PayPal. Grafana Cloud offers a fully managed experience with generous free tier. The CNCF ecosystem standard for metrics visualization.

freemiumOpen Source

Side-by-Side Comparisons

PostHog logo
PostHog
vs
Plausible logo
Plausible

PostHog vs Plausible — All-in-One Product Analytics vs Lightweight Privacy-First Web Analytics

PostHog and Plausible both champion privacy-respecting analytics but serve fundamentally different needs. PostHog is a comprehensive product analytics suite combining web analytics, session replay, feature flags, A/B testing, and surveys in one self-hostable platform. Plausible is a lightweight, cookie-free web analytics tool with a sub-kilobyte script focused purely on traffic metrics and referral data without tracking individual users.

PostHogPlausible

Community experience

Sources & verification

Sources checked
Content verified

Verification dates are editorial checks. Routine CMS saves and automatic updatedAt timestamps do not advance them.

FAQ

What is PostHog?

PostHog is an open-source product and data tools platform for analytics, session replay, feature flags, experiments, surveys, error tracking, web analytics, data warehouse, CDP and LLM observability workflows. It suits developer-led teams that want one integrated product OS instead of many separate tools.

Is PostHog free?

PostHog offers a free tier alongside paid plans. PostHog is an open-source all-in-one product analytics suite. It provides a generous Free tier including 1M product analytics events, 5,000 session replays, and 1M feature flag requests per month with zero seat fees. Paid usage is metered per product with volume tier discounts and hard billing caps, alongside customized Enterprise plans.

Is PostHog open source?

Yes — PostHog is open source.

Is PostHog still maintained?

Yes — PostHog is active. Its listing was last verified on August 26, 2026.

What are the best PostHog alternatives?

The first editor-selected PostHog alternatives are Datadog, Sentry, Grafana.

How does PostHog score in our review?

The published editorial review lists PostHog at 88/100 overall across speed, privacy, and developer experience. Check the review's evidence status and test metadata for its verification level.