Some applications are not sold in the Mac App Store, but rather downloaded from the internet. These apps are not signed by Apple and will therefore not be able to be installed on your Mac. Here’s how you install and run these apps.
Keep in mind to only install apps you trust!
After downloading a 3rd party app from the internet, right click on the download folder in the bottom bar and open it in Finder.
Locate your downloaded file in the download folder and right click it to extraxt the file. Alternatively, if your default is set to the Archive Utility, just double click the file.
The extracted file is located in the same folder as the original archive.
Right click on this file, in the context menu choose “Open”.
Upon running this app for the first time, you will get a warning that this app is downloaded from internet. If you trust the app, then confirm with “Open”, otherwise click “Cancel”.
The app will then run and you will see it in the bottom bar like any other app.
Go back to Finder, locate the app and move it to the Applications Folder.
Your app will now show up in the Launchpad, ready to run like any other app.
Important: Do not move the app in the applications folder before running and confirming it since it may not be executed at all if you don’t run it previously from its original folder (Downloads).
Alternatively, you can enable 3rd party apps to be installed in the System Preferences. We do not recommend this method, since it allows any 3rd party app (including malware, adware and viruses) to be installed on your Mac without confirmation.