Free de-essers for Mac OS aren’t that easy to come by. Thankfully, Computer Music magazine have come to the rescue.
Issue 226 “Stereo Science” (February 2016) comes with a free download of ToneBoosters TB Sibilance CM. This cut down version of TB Sibalance uses the same algorithms and provides a clean and simple user interface. While it may be lacking in-depth controls, it’s certainly up to the job of taming a sibilant vocal.
You can purchase a copy of Computer Music magazine issue 226 via the Computer Music app on iOS (iPhone or iPad) or Android for AU$7.99. Bargain!