Instagram Infinite Scroll is a single page Infinite Scroll app built using jQuery, and CSS.
Feedify is a jQuery plugin to convert text into HTML feed like Twitter and Facebook. It converts URL to links and Adds User links and Hash search links.
ballboy.js is a jQuery plugin to fetch a user's shots from Dribbble and display them.
RRSSB is a solution for responsive social share buttons that you can easily customize it by tweaking a few variables. SVGs allow for tiny file size and retina support.
Simple, light, flexible, and good-looking share button jQuery plugin.
ContentShare is a jQuery plugin which lets you share the exact content on a page which you actually want to share. It enables you to share selected text on your social network rather the default text specified in the tags.
By default, it supports Facebook and Twitter but you can add more networks easily.
A tutorial about Creating Responsive Share Buttons by using jQuery and CSS.
Advantage of creating own set of share buttons is that, it goes well with your layout, and you don't have to rely on bulky files that are loaded from anonymous servers, which could also slow down the page loading time significantly.
HideShare is a social sharing plugin that inserts social sharing links. Allows for sharing of current page with the option for sharing any link or image. Requires that Font-Awesome fonts and CSS be installed.
YouTube TV is a small, slick, library independent YouTube User/Playlist player. Also it can be used as a jQuery plugin.
ClassyTwitter is a jQuery plugin that gives you the ability to show your last tweets from Twitter in a nice interface.
InstaSlider is a lightweight jQuery image slider / carousel plugin that populates content from an Instagram hashtag. This plugin can be fully customized using CSS.
Pimax displays a photo gallery from your Picasa / Google+ albums. The Public albums are pulled from your account and dsiplayed on your website.
You can add a public album or add some images to your Google+ account; it will be reflected on your website with this plugin!
Slingpic is a jQuery image sharing plugin that makes it easy for your users to share your images across their social networks increasing traffic to your site.
Social Feed is a jQuery plugin which shows a user feed from the most popular social networks.
Currently supports: Facebook, Twitter, VK
jtwt.js is an easy-to-use jQuery plugin that allows you to display your recent tweets on your website or elsewhere.