A tiny macOS menu-bar app that keeps your Mac running even with the lid closed — so coding agents (Claude Code, Codex, etc.) keep working while you move around.
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Amphetamine Alternatives
Amphetamine is described as 'Little app that lives in your menu bar which can effortlessly override your energy saver settings and keep your Mac awake' and is a popular prevent sleep mode app in the os & utilities category. There are more than 50 alternatives to Amphetamine for a variety of platforms, including Mac, Windows, Android, Linux and F-Droid apps. The best Amphetamine alternative is Caffeine for Windows, which is free. Other great apps like Amphetamine are PowerToys - Awake, Stimulator, KeepingYouAwake and Caffeine for Mac.