Cube.js is an open-source, modular framework for building analytics into your web apps. You can use Cube.js for internal business intelligence tools, or customer-facing analytics.
Fathom Analytics is a simpler and more privacy-focused alternative to Google Analytics.
Fathom respects the privacy of your users and does not collect any personally identifiable information. All while giving you the information you need about your site, so you can make smarter decisions about your design and content.