SharePulse ranks in a widget your site's posts which have had the greatest share count, using Twitter, LinkedIn, Facebook and your comments.
A simple plugin to dynamically display social media links for various social networks via a widget / theme customizer
Professionally developed and free WordPress plugin that allows your users to register and login to your profile with their existing social network acc
Integrate LinkedIn groups into WordPress
Adds a sharing tool to every page and post.
Configurable Facebook, Twitter, Google, Pinterest & more Social buttons with reports
AS login you can fully customize wordpress login page.
Add extensible Linkedin login capabilities to a WordPress site.
Google Locker is a plugin help you to get more Share/Subscribe, traffic and customers.
Linkedin_Oauth allows users to login/register into your wordpress using their linkedin account, uses shortcodes.
This module enables Social Login (Facebook and more) social sharing with detail User Profile Data & Social Analytics on your site
Show author information on post types not depending on WordPress users for galleries, expositions, content offered for/by third parties, etc.
A very simple social share scrolling plugin with just 6 social icons (Twitter, FB Like, Google +1, Linkedin, FB Share and Stumbleupon)
Unrestricted Social Network Auto Poster WordPress Plugin. Add mutiple accounts for 10 social sites
This plugins makes possible for your readers to share pieces of content from your site in the following social networks: Facebook, Twitter, Orkut, Del
A simple plugin that shows you the performance of your posts on social media websites.
Sends status updates to Ping.fm or Twitter everytime you publish a post, using own domain or others for shortened permalinks.
ContentCalendar is a drag and drop editorial calendar that helps you plan and schedule content in a visual manner.
Get more followers, shares and customers with simple powerful viral tools and rewards.
Publish your blog content on Social Networks & + 250 press portals
Customize WordPress login page easily according to your theme or any other custom style with Custom Login Page Styler.
Display 100% responsive stylish author's biography with social icons in bottom of the posts/pages.
Share/follow, easily and legally, pages and posts with WP short code and bitly short urls
Knowledge Google par JM Créa permet d’ajouter vos liens vers les réseaux sociaux directement dans les résultats Google.
PAYCALL enables you to run online sessions with your customers. Communicate via chat, voice or video. Earn extra income. Anytime, anywhere.
Keeps your blog always fresh by regularly adding your latest and greatest content from FriendFeed or Twitter. No external passwords required!
Easy add social buttons in menu bar...
This plugin adds a spot to the bottom of all single posts with social share icons for Facebook, Twitter, Google+, Linkedin and Pinterest.
Google Identity Toolkit (GITkit) helps relying party (RP) websites to support federated login easily (http://code.google.com/apis/identitytoolkit).
LoudVoice replaces the basic WordPress comments by a powerful comment system that includes logging in with 30+ social networks, spam filters and more.