Amphetamine

Amphetamine is a lightweight macOS utility that prevents your computer from sleeping, dimming the screen, or activating the screensaver. It offers flexible controls—set custom durations, trigger sessions based on app usage, or use predefined timers. Ideal for tasks like streaming videos, downloading large files, or presentations where interruptions are unwanted. Its menu bar interface lets you activate/deactivate with one click, while advanced features include scheduling, hotkeys, and integration with power adapter states. Free and user-friendly, it’s a top choice for anyone needing to keep their Mac active when needed.