You need to install the Oculus software to use the Rift, but there is no requirement to have or link to a Facebook account, and afaik, never will be. To run so

You need to install the Oculus software to use the Rift, but there is no requirement to have or link to a Facebook account, and afaik, never will be. To run software from outside the Oculus store, you simply go into the Oculus settings and flip a switch enabling external applications.