Analytics and monitoring

Amplitude alternatives

2 open-source projects that already do this job. Free to use - not free to run, which is what the numbers on the right are for.

The full assessment →

The projects

PostHog/posthog37,542licence unclearSelf-hosted product analytics platform with feature flags, experimentation, session replay, and analytics UI.Open on GitHub growthbook/growthbook8,105licence unclearOpen-source feature flags and experimentation platform with analytics and experiment reporting.Open on GitHub

What you give up either way

Enterprise-scale event indexing, storage, and retention management
Built-in AI Agents, MCP integrations, and AI Feedback workflows
Session replay at scale and advanced replay capture features
Advanced feature-management controls (RBAC, portfolio-level projects, percent-based pricing tiers)
Hundreds of vendor integrations and managed support/onboarding

An open-source project doing the core job proves a replacement is possible. It does not prove it matches Amplitude, and it does not prove anyone has run it for a month. How we decide.