renemanqueros

Allows users to log in to WordPress using Google+ or Facebook. 
Adds a configuration panel under Settings where users can set API keys. 
Upon successful login, depending on the service, users will be redirected to either:
— www.mywebsite.com/facebookcallback/ 
— www.mywebsite.com/googlecallback/
<ul>
<li>Trailing slash is mandatory. 
After that the user will be sent to the destination url set in the Settings panel.</li>
</ul>
<h3>Theming</h3>
Both links have a common CSS class: “gp_sociallogin”. 
Google’s login link has a specific class: “google”. 
Facebook’s login link has a specific class: “facebook”.

GP social login

Allows users to log in to Wordpress using Google+ or Facebook.

elojografico

This plugins allows us to insert share buttons in the single post view, with no loading pain.
At this moment, it works with Facebook, Google+, Twitter and Whatsapp (this last only when displaying on mobile devices).
It has just a few options to configure it, and works fine with no special requirements.
If you like it, please rate it and any review, comment, question or petition will be welcomed.

EOG Simplest Share Buttons

Adds buttons to blog posts that allow the visitor to share the content in his favourite social network.

GP social login vs EOG Simplest Share Buttons