caffeine を Homebrew Cask でインストール

プロジェクトリンク

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コマンドとエイリアス

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プロジェクトの歴史

Caffeine was originally developed in 2006 by Tomas Franzén of Lighthead Software. It prevents automatic sleep and related idle behavior by calling macOS system APIs.

IntelliScape Solutions later contacted Franzén and received the source under an open-source license, allowing the company to continue the project after compatibility problems appeared with macOS Mojave.

採用の歴史

Caffeine became a well-known Mac utility because its menu-bar interface reduced sleep prevention to a single click. Its simple design allowed it to remain useful after active development of the original version ceased.

After macOS Mojave introduced privacy controls that interfered with the older implementation, IntelliScape obtained permission and source code from Tomas Franzén and resumed development. Later releases restored compatibility with newer macOS versions while preserving the original interaction model.

使われ方

Launching Caffeine places a coffee-cup icon in the menu bar. Clicking the icon toggles indefinite keep-awake mode; right-clicking or Command-clicking exposes timed activation, preferences, and quit commands.

The empty cup indicates that Caffeine is inactive, while a full cup indicates that the Mac will be kept awake. Newer macOS releases may require Accessibility permission.

パッケージ好きにとっての重要性

Caffeine is an early and enduring example of the tiny macOS menu-bar utility: one narrowly defined system behavior, minimal interface, and effectively no setup. Its continued packaging illustrates how small utilities can outlive their original maintainers when operating-system changes eventually require stewardship to resume.

タイムライン

• 2006: Tomas Franzén of Lighthead Software originally developed Caffeine.
• 2018: IntelliScape continued development after receiving the source code under an open-source license.
• 2019: Version 1.1.2 introduced support for macOS Mojave and Catalina privacy requirements.
• 2025: Version 1.1.4 added compatibility with macOS Tahoe.

Related projects

• macOS includes the similarly purposed caffeinate command, although the official documentation states that Caffeine is not merely a wrapper around it.
• Numerous later keep-awake menu-bar utilities follow the same general interaction pattern.

ソース

• https://github.com/IntelliScape/caffeine
• https://intelliscapesolutions.com/apps/caffeine
• https://intelliscapesolutions.com/apps/caffeine/support