Caffeine

Caffeine is a lightweight macOS utility that prevents your Mac from automatically sleeping or entering screensaver mode while it's running. Users typically rely on it during presentations, video calls, or any extended work session where they need the display and system to remain active without manual intervention. The app runs quietly in the menu bar and can be toggled on or off with a single click. It's particularly useful for developers, content creators, and professionals who need to keep their screens active during unattended processes or demonstrations.