In one paragraph
Matomo invented 'self-hosted, GDPR-friendly analytics' and still owns that crown for government and enterprise procurement. Millimetric is the same compliance posture rebuilt for HTTP, JSON and LLMs — without 12 years of PHP plugin sprawl.
Pick Matomo when…
- Procurement says 'self-hosted, on-prem, EU-only, on a VM I touch.'
- You have a sysadmin and like PHP.
- You need plugin-ecosystem features (heatmaps, A/B, etc.).
Pick Millimetric when…
- Procurement says 'EU data, no third-party cookies' but you don't want to run anything.
- You're on serverless, edge, or Workers — Matomo doesn't fit there.
- You want an MCP server so your AI agent can read events.
Feature
Millimetric
Matomo
- Compliance postureGDPR / UK-GDPR / CCPAGDPR / UK-GDPR / CCPA
- ArchitectureHTTP API + edgePHP + MySQL
- Bundle size1.8 KB~25 KB
- Plugin ecosystemNarrow on purposeVast
- MCP for agentsNativeNo
Last reviewed May 2026. Spotted an out-of-date detail? Tell us.
Our verdict
Matomo for orgs running their own iron. Millimetric for orgs running their own ideas.