Clipboard managers, window managers, menu bar tools, system monitors and audio utilities. No accounts, no subscriptions, no telemetry. Each one is a free alternative to a paid app you may already know.
No app matches that search.
.zip, unzip, drag the app to Applications. The apps aren't notarized yet, so on first launch right-click the app and choose Open. Every app has a Support / Donate button; none of them phone home.