mbpfan
A simple daemon to control fan speed on all MacBook/MacBook Pros
...It reads temperature data via the coretemp kernel module and drives fan speeds through the applesmc interface, making it especially valuable for users running Linux natively on Apple hardware where automatic thermal control may be lacking. The daemon supports multiple processors and multiple fans, allowing flexible configurations for complex Mac models, and aims to keep systems both cool and quiet by dynamically adjusting fan behavior. While originally based on Allan McRae’s mbpfan, this enhanced version expands compatibility and tuning options. ...