You may have noticed, Steam is now a login option. That was fairly simple, but things get complicated if I want to use any of the other popular ID providers.
I have never used the following services, much less have any hope of acquiring an API key for them without creating an account:
If anyone were willing to provide API keys for these other services, it’d help out A LOT. I do expect that most users will just go for the Steam login, but the more login options the better.