"Enable Intel SpeedStep and undervolting on any OS X kernel with this kernel extension software." (17 words)
The main highlight of this software is that it is entirely free and does not require any subscriptions or in-app purchases. You can download it and use it right away. Furthermore, you can contribute to the development of this software if you have the desired skillset. The xnu-speedstep is entirely open-source, which means the source code is available for everyone to view and modify.
If you're concerned about the technicalities of this software, then let me ease your mind. The xnu-speedstep is licensed and distributed under the terms of the BSD license. It is an easy-to-understand, permissive free software license that allows you to use, modify, and distribute the software under specific conditions.
So, if you're experiencing any issues with AppleIntelCPUPowerManagement and need a better alternative, then xnu-speedstep is the perfect choice. Give it a try and see the difference in speed and performance of your Mac.
Version 1.4.5: N/A