MacOS Sierra allows you to run programs from any source

Reference from http://bbs.feng.com/read-htm-tid-10584598.html

Mac new System Sierra in the default already do not see "any source" option, you can not install a lot of third-party programs, so need to do some configuration;

Open "terminal" that is "Terminal", and then enter the following command, that is, turn off the gatekeeper:

sudo spctl--master-disable

Enter the password again, OK;

And you can see any source.

MacOS Sierra allows you to run programs from any source