Socialight is a Vanilla.js library to get social network share counts of your links. Socialight support Facebook, Twitter, Google+, Linkedin, Pinterest and Buffer.
A tutorial about creating social share buttons for your mobile website by using jQuery, HTML5 and CSS. It also support share via WhatsApp.
goodshare.js is an useful jQuery plugin that will help your website visitors share a link on social networks and microblogs or mobile messengers. Easy to install, SEO friendly, many options for customization of appearance.
Likely is the social sharing buttons that aren't shabby. It supports Twitter, Facebook, Google Plus, Pinterest, VKontakte (ВКонтакте), Odnoklassniki (Одноклассники) etc.
A simple tutorial which will help to share articles from the webpage to WhatsApp using jQuery.
CSButtons is a jQuery plugin to create sharing buttons with counter for Facebook, Twitter, Google Plus, Linkedin, Pinterest.
Cool Social Buttons is a jQuery plugin that adds social sharing buttons to your site without slowing it down. It is easy to use, powered by CSS3, mobile friendly and fully customizable.
The plugin has support for Twitter, Facebook, Google+, Tumblr and Pinterest.
jQuery prettySocial is a custom share buttons for Pinterest, Twitter, Facebook and Google Plus.
jNottery is a jQuery plugin that lets you add notes and markers to webpages. All the data is encoded as a part of an URL which makes it easy to share or save.
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.
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.
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.