

And it's in Format, so it automatically works with the Platform including the Menu and Backup Utility. It supports upgrades by installing right over an existing copy, preserving all settings. Opal Portable is packaged in a Installer so it will automatically detect an existing installation when your drive is plugged in. Opal is relaxing sound generator that allows you to mix dozens of sounds (rain, wind, thunder, fire, office, etc) to create a customized sound environment.

Update automatically or install from the portable app store in the Platform.

And it's open source and completely free. It's packaged in Format so it can easily integrate with the Platform.
