umami-software/umami

What it is

A self-hosted, cookie-free website analytics platform: visitors, referrers, UTM campaigns, conversions and page performance on one dashboard, running on an existing PostgreSQL database. The current release adds custom dashboards, Core Web Vitals tracking and session replay to what Edition 1 described.

What it is good for. When the top priority is traffic to a site and growth on a channel, nothing connects the two without an instrument. Umami's campaign tracking is what turns "I published a tutorial" into "that tutorial sent nine people, two of whom opened the app" — and without that, every future edition of this radar is asking you to make decisions with your eyes closed. The session replay in the current version matters more than it sounds: when one screen in a product is the known explanation problem, watching six real sessions of somebody meeting it is worth more than any amount of speculation about what to fix. It is also the prerequisite for two tools this radar has already covered — Usertour is pointless until you know where people drop off, and GrowthBook's experiments are meaningless until you know how many visitors you get.