Shipnoted is a changelog, feedback board and public roadmap that closes the loop from your git: customers ask, your pull request cites the request, and everyone who asked is told when it ships.
Klyqo is a native menu bar app that plays real keyboard, mouse and scroll sounds as you type, anywhere on your Mac. 46 sounds (36 recorded from real keyboards), record your own keyboard, and it goes quiet by itself on calls. It hears that a key was pressed, never what you type. Try the sounds in your browser, then get a free 3-day trial key. One-time license, no subscription.
Acclimach is a Mac menu bar app for people who switch from Windows: a window switcher, cut and paste in Finder, window snapping, a clipboard list, per-app volume and more. Free, with a one-time Pro.