Downloading Keyhac 1.6 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. This free software for Mac OS X was originally developed by craftware. We recommend checking the downloaded files with any free antivirus.
From the developer:
Keyhac is a utility application for macOS that allows you to customize keyboard actions for any application using the Python scripting language. Keyhac gives you the flexibility to customize the behavior of various applications.