The 1.4 version of uControl for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software is included in Theming Tools. 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:
uControl gives you the ability to take those useless keys, that you're certain would have been better fashioned as something else, and turn them into something useful.
You may want to check out more Mac applications, such as Occurrence Selector, which might be related to uControl.
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