Sharingbuttons.io!

AddThis is a free way to boost traffic back to your site by making it easier for visitors to share your content.

Shareaholic is the simplest way to share, spread, and save interesting webpages via your social networks, email, blogs, IM, and more.

A service that let you share addresses to web pages etc on most of the common used social networks and sites.

Simple Sharing Buttons Generator is a simple web app that lets you create static sharing buttons with only HTML and CSS, that allow your users and visitors share your content on Facebook, Twitter, Google+ and other social networks.