bbPress.org

From my experience this worked best

But requires an account from a website

only works for 2000 users only , to have more than that you would have to pay for a premium version of the service

https://wordpress.org/plugins/oa-social-login/

This didnt really work for me , and is also a free/premium service

requires an account to their website also , and is limited on users that can use the social login feature.

https://wordpress.org/plugins/loginradius-for-wordpress/

I tried this plugin before it was called super socializer

and it didnt work at all on my site

https://wordpress.org/plugins/super-socializer/

I havent really gotten into trying all the social login plugins on codecanyon.

other than my opinion , do a google search try to find other peoples opinions on the best social login plugin , and make a very decisive decision on your plugin choice.