Psst

The sound that plays when your Mac boots up can be rather annoying at times.

If you've ever had to turn the computer on at night or in a waiting room full of people, you probably managed to attract everybody’s attention for an instant.

Psst is a tiny app to let you to adjust the volume level of this sound, increasing it, decreasing it, or silencing it forever.

For the changes to take effect in the system, first check that Psst has been successfully enabled. Then you can say goodbye to those awkward looks from a too-loud Mac startup sound.