Caffeine prevents your Mac from going to sleep by using core services within macOS to instruct the system to remain active. Contrary to popular belief, it is not simply a wrapper around the built in caffinate command, but instead directly utilizes the same system APIs.
The goal of Caffeine is to be very simple to use, and to stay out of the way so that it doesn't interfere with your productivity.
When you first launch Caffeine, the Welcome window will give you a brief introduction, as well as provide you with options to set your preferences as to how you'd like Caffeine to function.
Yes! Support for macOS Mojave was introduced in version 1.1.2. Due to stronger security and privacy controls, you'll be prompted to grant Caffeine access to use Accessibility features on your Mac.
If you are experiencing issues with granting Caffeine permission on your system, or Caffeine does not appear to be working, please see the section on System Permissions for more information regarding these systems.
Yes, Caffeine is open source software. It is licensed under the MIT license, and the source code can be viewed here.
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