LinksAlpha

Get Support: support@linksalpha.com
Plugin shows Twitter users who recently tweeted links from your blog. In other words, quick and easy way to get your Twitter community rolling 🙂
Plugin shows Tweets linking your Blog posts. Tweets show up below the comment form on each blog post
Plugin shows Count of Tweets linking to your blog. Count can be configured to show next to “Comment Count” or “Blog Post Date” for each blog post.
Check out our other plugins that you will find extremely useful:
<ul>
<li>Social Discussions: show popularity of your blog posts on Social Networks including Twitter, Facebook, Google Buzz, Yahoo, and bit.ly. https://wordpress.org/extend/plugins/social-discussions/</li>
<li>Social Stats: track your blog activity on social networks – monthly/weekly/daily, and track your popular posts. https://wordpress.org/extend/plugins/social-stats/screenshots/</li>
<li>Network Publisher: auto publish your blog posts to Twitter, Facebook, LinkedIn, Yahoo, Yammer, Identi.ca, and MySpace. https://wordpress.org/extend/plugins/network-publisher/</li>
<li>Buzz Roll: let your users share your blog post on fastest growing social hub – Google Buzz. https://wordpress.org/extend/plugins/buzz-roll/screenshots/</li>
</ul>

Retweeters

Pete Mall

This plugins enables you to add the official <a href="http://blog.twitter.com/2010/08/pushing-our-tweet-button.html" rel="nofollow ugc">Tweet Button</a> from Twitter. 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.

WP Tweet

Adds the official Tweet Button from Twitter.

Retweeters vs WP Tweet