Download of SleepMute 1.1.1 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software relates to System Tools. We recommend checking the downloaded files with any free antivirus. SleepMute was developed to work on Mac OS X 10.6.6 or later. This Mac app is an intellectual property of com.tangerineelement. The most popular version of the program is 1.1.
From the developer:
SleepMute automatically mutes & unmutes sound. Don't let your computer disrupt a quiet shared space with unwanted alert sounds at all hours of the night, let SleepMute keep the peace!
Features:
✹ Mute and unmute when the screen saver starts, display sleeps, computer sleeps, or computer restart, shutdown, & logoff.
✹ Fade sound in or out over 1 - 5 seconds.
✹ Mute or unmute immediately instead of fading.
✹ Privacy.
You may want to check out more software for Mac, such as AlphaTrack Manager, Script Timer or Screem, which might be related to SleepMute.