Umami
Simple, fast, privacy-focused open-source web analytics with no cookies and complete data ownership for GDPR compliance.
Plausible
Privacy-focused open-source web analytics alternative to Google Analytics with GDPR compliance and lightweight tracking script.
ClickHouse
Lightning-fast open-source columnar database management system designed for real-time analytics, OLAP workloads, and big data processing with exceptional performance.
PostHog
Open-source product analytics platform with event tracking, feature flags, session recording, and A/B testing - privacy-first alternative to Mixpanel and Amplitude.