Fathom and Plausible are both open source: https://github.com/usefathom/fathom https://github.com/usefathom/fathom https://github.com/plausible/analytics https

Fathom and Plausible are both open source: https://github.com/usefathom/fathom https://github.com/usefathom/fathom https://github.com/plausible/analytics https://github.com/plausible/analytics