PostHog

The all-in-one platform for building better products

Freemium

About PostHog

PostHog is the open-source alternative to tools like Amplitude, Mixpanel, and LaunchDarkly—but instead of paying for 5 separate products, you get everything in one platform. Core features: product analytics (funnels, retention, trends), session replay (watch users interact with your product), feature flags (ship code behind toggles), A/B experiments (test changes with statistical rigor), and surveys (collect user feedback). The open-source nature means you can self-host for complete data ownership, or use PostHog Cloud with generous free tiers. Free tier includes 1M events/mo, 5K session recordings, and 1M feature flag requests. Paid pricing is usage-based, starting around $0.00031/event. PostHog's developer experience is excellent: SDKs for every language, HogQL for custom queries, and great documentation with humor (rare in analytics). Limitations: complex self-hosting (requires ClickHouse expertise), can get expensive at scale, and some features are still maturing. Best for startups wanting one tool for product insights, teams valuing data ownership, and developers who appreciate good DX.

Key Features

Product analytics with funnels, retention, and trends

Session replay to watch user interactions

Feature flags for controlled rollouts

A/B testing with statistical significance

User surveys and feedback collection

HogQL for custom SQL-like queries

Data pipelines and exports

Self-hosting option for data ownership

Excellent SDKs for every language

Pros & Cons

Pros

• All-in-one platform replaces 5+ tools
• Generous free tier (1M events/month)
• Open-source with self-hosting option
• Developer-friendly with great documentation
• Usage-based pricing scales with your needs
• Active community and rapid development

Cons

• Self-hosting requires ClickHouse expertise
• Can get expensive at very high volumes
• Some features still maturing vs. specialized tools
• Session replay limited on free tier
• Learning curve for all features
• Less polished than established competitors

Best For

Startups wanting one analytics platform Product teams needing analytics + feature flags Companies requiring data ownership (self-host) Developers who value good DX and documentation Teams migrating from multiple point solutions