brehash

This plugin adds the official <a href="http://blog.twitter.com/2010/08/pushing-our-tweet-button.html" rel="nofollow ugc">Tweet Button</a> from Twitter to your Pages, Posts or Home Page. It lets your users share links directly from the page they’re on. When they click on the Tweet Button, a Tweet box will appear pre-populated with a shortened link that points to the item that they’re sharing.
This plugin is very customizable via ‘rsh-Tweet Button’ under the ‘Settings’ menu in WordPress Admin. Change the look and feel, pozition and where to seen of the button.

rsh-Tweet

Adds the official Tweet Button from Twitter.com.

Elsner Technologies Pvt Ltd

pankaj.sakaria

If you are looking to boost your online presence by sharing your content with a wider audience, this social media plugin for WordPress is all you need. You can add Google, Twitter, Facebook, and LinkedIn WordPress social share buttons to your posts. Advance Social Sharer is your ultimate plugin that enables improved reach to your target customers across different social media platforms.
Requires WordPress 3.0 and PHP 5.
Features:
<ul>
<li>One-click and integrated sharing of content over social media platforms. </li>
<li>Instant content sharing for viewers on their preferred social media platforms.</li>
<li>Tailored and flexible placement of the social sharing plugin buttons as per your website’s design.</li>
<li>Responsive and optimized plugin for mobile devices.</li>
<li>User-friendly configuration and customization options.</li>
<li>Overall control of the content being placed.</li>
</ul>

Advance Social Sharer

Add social button to your wordpress website for share your post to social network such Facebook,LinkedIn,Twitter and Google.

rsh-Tweet vs Advance Social Sharer