Google chrome Extensions 
chrome Web store 
Wordpress Plugins 
Mozilla Firefox Addons 
AddToAny Share Buttons Wordpress Plugin Share buttons for WordPress including the AddToAny sharing button, Facebook, Twitter, Google+, Pinterest, WhatsApp, many more, and follow icons too.
Total Downloads: 5.4M Download Plugin
Share Buttons by AddThis Wordpress Plugin Increase social traffic to your website with WordPress share buttons that connect directly to over 200 social networks.
Total Downloads: 3.3M Download Plugin
NextScripts: Social Networks Auto-Poster Wordpress Plugin Automatically publishes blogposts to profiles/pages/groups on Facebook, Twitter, Instagram, Google+, Pinterest, LinkedIn, Blogger, Tumblr ... 22 more
Total Downloads: 3.1M Download Plugin
Shareaholic | share buttons, related posts, social analytics & more Wordpress Plugin World's leading all-in-one Content Amplification Platform that helps grow your site traffic, engagement, conversions & monetization for FREE.
Total Downloads: 2.3M Download Plugin
NextGEN Facebook - Social Meta Tags for Facebook, Google, Pinterest, Twitter & More Wordpress Plugin Complete meta tags for the best looking shares on Facebook, Google, Pinterest, Twitter, etc - no matter how your webpage is shared!
Total Downloads: 2.1M Download Plugin
Social Media Widget Wordpress Plugin Adds links to all of your social media and sharing site profiles. Tons of icons come in 3 sizes, 4 icon styles, and 4 animations.
Total Downloads: 1.7M Download Plugin
WPSSO - Complete Meta Tags and Schema Markup for Social Sharing Optimization & SEO Wordpress Plugin Automatically create complete and accurate meta tags and Schema markup for Social Sharing Optimization (SSO) and SEO.
Total Downloads: 1.6M Download Plugin
Simple Share Buttons Adder Wordpress Plugin A simple plugin that enables you to add share buttons to all of your posts and/or pages.
Total Downloads: 1.5M Download Plugin
Revive Old Post (Former Tweet Old Post) Wordpress Plugin Plugin to share about your old posts on twitter, facebook, linkedin to get more hits for them and keep them alive.
Total Downloads: 1M Download Plugin
WordPress Button Plugin MaxButtons Wordpress Plugin WordPress button plugin so powerful and easy to use anyone can create beautiful buttons and social share icons.
Total Downloads: 1M Download Plugin
Digg Digg Wordpress Plugin Your all in one share buttons plugin. Add a floating bar with share buttons to your blog. Just like Mashable!
Total Downloads: 1M Download Plugin
WP Social Bookmarking Light Wordpress Plugin This plugin inserts social share links at the top or bottom of each post.
Total Downloads: 629.5K Download Plugin
Social Login Wordpress Plugin Allow your visitors to comment and login with social networks like Twitter, Facebook, Paypal, LinkedIn, Instagram, OpenID, VKontakte, Google, Pinteres
Total Downloads: 515.6K Download Plugin
Hupso Share Buttons for Twitter, Facebook & Google+ Wordpress Plugin Help share your posts on popular social networks: Twitter, Facebook, Google+, Linkedin, Pinterest, StumbleUpon, Tumblr, Reddit, Bebo and others.
Total Downloads: 484.3K Download Plugin
WP Socializer Wordpress Plugin Super Cool Plugin for inserting all kinds of Social Bookmarking & Sharing buttons. Has customizable Floating Share Bar, Widgets, Shortcodes also.
Total Downloads: 482.2K Download Plugin
WPSSO Social Sharing Buttons - Facebook G+ LinkedIn Pinterest Twitter WhatsApp & More Wordpress Plugin WPSSO extension to add Social Sharing Buttons with support for hashtags, short URLs, bbPress, BuddyPress, WooCommerce, and much more.
Total Downloads: 470.6K Download Plugin
Social Sharing Toolkit Wordpress Plugin Easy sharing and connecting on social networks. Display on posts or use widgets or shortcode. Also Twitter name/hashtag to link converter.
Total Downloads: 452.6K Download Plugin
Add Twitter, Facebook Like, Google plus one Social share Wordpress Plugin WordPress plugin for twitter, facebook, Google +1 (plus one) and other social share. Can add the share box before post contents, after and also floati
Total Downloads: 397.4K Download Plugin
Slick Social Share Buttons Wordpress Plugin Slick social share buttons adds facebook, twitter, google +1, linkedin, digg, delicious, reddit, stumbleupon, buffer and pinterest pin it social media
Total Downloads: 377.3K Download Plugin
Tweet, Like, Google +1 and Share Wordpress Plugin A very simple yet one of the most extensively used social share plugin with vertical scrolling sharebar support.
Total Downloads: 377K Download Plugin
