Here are some popular web services that came to Internet in a time period of last three years. All services are orders in year wise descending order.
jQuery Pin It Button For Images is the easiest way of showing up a Pin It button over the images on mouse hover in WordPress. All you need to do is install and activate the plugin and it automatically displays a Pin-It button when anyone hovers the mouse pointer over images present in your blog posts and pages etc.
Sliding Social Icons is the new WordPress plugin that enables you to display simple social media profile link representations on right side of your WordPress site. The best feature of this plugin is that it allows you to show social sliding buttons in custom color so that you can make them look akin to your theme’s color format.
Other than displaying standard brand colors in social sharing icons you can easily display them in the colors you like.
Share Buttons by AddToAny is a popular social media sharing kit with more than 2 million digital downloads. It is a free plugin which you can download from WordPress plugin repository, make a few easy configuration settings and easly display sharing icons for popular social networking websites like Facebook, Twitter, Google+, Pinterest, StumbleUpon and there are many many more.