OS X Cocktail just came out with a new release that has a feature to disable Gatekeeper.
We would like to inform you that Cocktail 10.1.1 (Sierra Edition) for users running macOS Sierra (10.12) has been released. Here are the release notes for this version:
Added ability to disable Gatekeeper
Gatekeeper is a feature in macOS designed to help protect your Mac from malware and misbehaving apps downloaded from the Internet. Though most Mac users will want to keep Gatekeeper enabled for security purposes, some advanced users find that Gatekeeper is overly zealous in preventing third party apps from being used in macOS.
The Gatekeeper settings can be found in System Preferences > Security & Privacy > General. Gatekeeper offers two settings of increasing security: “App Store” and “App Store and identified developers”. The first choice limits users to running apps obtained from the App Store only, the second choice allows users to run apps from the App Store as well as from software developers who have registered with Apple and securely sign their applications. By disabling Gatekeeper you can add third “Anywhere” option that allows users to launch applications from any source.
And it works. On Sierra I just downloaded Panorama 6 and ran the installation successfully.