Hi everybody, I've designed this app to be very easy to use. You set a target temperature, and it'll adjust the fans accordingly. I've coded it for my personal use, but since it's useful, I feel I should share it! Edit: Revision 3 improves speed regulation. Edit: Revision 4 adds a more gradual automatic speed change. Edit: Revision 5 adds the "open at login" feature and fixes a display problem. Edit: Revision 6 implements S.M.A.R.T. reading and small core changes. 6.2 provides a fix for certain machine's behaviour when no temperature sensor is found. Edit: Revision 7 implements more gradual speed changes and more advanced criterias when running on batteries, speed change is less aggressive auto-start on login feature improves the overall performance Edit: Revision 8 brings an even more minimalistic and user friendly interface along with an increase in performance. Edit: Revision 8.1 and Revision 8.2 fix minor glitches. Edit: Revision 9 entirely rewritten the core of the automatic speed regulation manual control: you can now manually control your fans' speed new user interface now checks for every available temperature sensor fixes a series of minor bug fixes Edit: Revision 9.1 fixes a bug involving the choice of the Farenheit unit. Edit: Revision 9.2 now reads the real CPU temperature in MacBook Pro Retinas. UltraFan(...-10.5) is for Leopard users. Feel free to post feedback and suggest new features. Readme On the status bar, if either auto or manual mode is on you'll notice a symbol right before the current temperature. √ means auto mode is on; ~ means manual mode is on. The "save log on Desktop" checkbox has been introduced in the beta development, and I'll probably remove it. For further information, you can read the latest Beta post.