Mainspring

Mainspring reveals the settings macOS hides and turns them into 90+ one-click power-ups for Finder, the Dock, screenshots, animations, windows and more.

Every change is snapshotted, so any switch flips back in one click. Recipes such as Developer Setup (hidden files, all file extensions, fast key repeat) apply and revert as a set.

It runs locally with no account. $29 once, with a free 1-day trial.