The most popular Amplitude alternatives & competitors, compared
Contents
1. PostHog
- Founded: 2020
- Most similar to: Amplitude, Heap, Pendo
- Typical users: Engineers, product, and growth teams
- Typical customers: Mid-size product-focused B2Bs and startups

What is PostHog?
PostHog (that's us 👋) is an open-source platform combining product analytics, session replay, feature flags, A/B testing, and user surveys into one product. This means it's not just an alternative to Amplitude, but also tools like LaunchDarkly and FullStory.
Typical PostHog users are engineers, founders, and product managers at startups and mid-size companies, particularly B2B companies. Customers include AssemblyAI, Hasura, Vendasta, and Airbus.
Key features
📈 Product analytics: Funnels, user paths, retention analysis, custom trends, and dynamic user cohorts. Also supports SQL insights for power users.
🧪 A/B tests: Up to 9 test variations, primary and secondary metrics. Automatically calculate test duration, sample size, and statistical significance.
📺 Session replays: Including event timelines, console logs, network activity, and 90-day data retention.
💬 Surveys: Target surveys by event or person properties. Templates for net promoter score (NPS), product-market fit (PMF) surveys, and more.
🚩 Feature flags: Rollout features safely with local evaluation (for faster performance) and JSON payloads.