Like Button - Facebook Developers
The Like button enables users to make connections to your pages and share content back to their friends on Facebook with one click.
Share Tweets with personality
Customizable "Tweet This" link that integrates the Bit.ly API and Twitter updates with selectable menu of prefaces, and then tweet the preface and link accordingly.
MooTools TwitterGitter Plugin
MooTools plugin that retrieves a user's recent tweets and allows the user to format them however the user would like. TwitterGitter allows the user to choose the number of tweets to retrieve and retu ...
Tweetcount Widget Retweet Button
The BackType Tweetcount widget lets publishers display the number of tweets their posts get on Twitter, and lets readers easily retweet
The Retweet button is for website and blog publishers that want to encourage their audience to retweet their content on twitter.
Easy Retweet Button