Hiding 3.1 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application lies within System Tools, more precisely Automation.
This free application is compatible with Mac OS X 10.6 or later. The following versions: 3.1 and 3.0 are the most frequently downloaded ones by the program users. The actual developer of this free Mac application is Schliep GmbH. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
Hiding is a small tool to hide all opened applications with one click.
If you don't want that Hiding appears as a window, you can switch to "Hiding Mini". If you have activated Hiding Mini, the window closes and a little icon appears in your menubar. So you can control Hiding in the menubar.
Of course, you can even use Hiding faster with global shortcuts. Simply go into the preferences and set shortcuts for all actions.
You may want to check out more Mac applications, such as Peekaboo Zoo - Who's Hiding? A fun & educational introduction to Zoo Animals and their Sounds - by Touch & Learn, Hides or 123 Kids Fun PEEKABOO - Educational app for toddlers and preschoolers, which might be related to Hiding.