The 2.01.1 version of OctoShell 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. This free software for Mac OS X was originally created by Addison Software, Inc. We recommend checking the downloaded files with any free antivirus.
From the developer:
OctoShell efficiently houses your OctoPi / OctoPrint printer session making it a standalone app. This creates a separate icon on the dock and frees up your browser for other things. OctoShell works just like running the OctoPi session from a browser but without all the inconvenience.