I'm not sure what your environment of choice is, but I use Python with Django which has great built-in email/password auth and a really nice user admin tool[0] if that's all your looking for.
For third-party authentication/authorization, I use the python-social-auth django integration[1]. It has a massive number of third-party systems that it can connect to and it's really simple to get it set up. I would guess your language of choice has similar tools. I know passport[2] for nodejs is a solid choice.
For third-party authentication/authorization, I use the python-social-auth django integration[1]. It has a massive number of third-party systems that it can connect to and it's really simple to get it set up. I would guess your language of choice has similar tools. I know passport[2] for nodejs is a solid choice.
[0] https://docs.djangoproject.com/en/2.1/topics/auth/ [1] https://github.com/python-social-auth/social-app-django [2] http://www.passportjs.org/