Displays your latest pictures from TwitPic in the sidebar of your blog. The plugin is widget ready and comes with many configuration options!
Integrate TwitterCounter.com badges on your blog to display the number of followers you have on Twitter.
Twitter Feed for WordPress
Twitter Avatars In Comments WordPress Plugin
The plug-in is released under the GPL. You can use it for all your projects for free and without any restrictions. Please link to this article if you would like to spread the word. You may modify the plug-in as you wish.
Adds a button which easily lets you retweet your blog posts.
Simple Twitter Connect
Makes it easy for your site to use Twitter, in a wholly modular way.
Topsy Retweet Button
Provides a Twitter retweet button for your posts that shows all tweets, enables retweeting, and adds tweets as comments.
Allow your commentators to include their Twitter username along with their comment so a follow-me link can be displayed with their details on the list.
WP to Twitter
Posts a Twitter update when you update your WordPress blog or post to your blogroll, using your chosen URL shortening service. Requires PHP 5 and cURL
Tweet Old Post
Plugin to tweet about your old posts to get more hits for them and keep them alive.
Twitter Friendly Links
Your very own TinyURL within your OWN domain! If you DO promote your blog posts in Twitter, then you MUST make your links look cool!
Twitter Comments – Twitoaster
Twitter Comments system. Automatically retrieve Twitter Replies and/or Twitter Retweets to your Blog’s Posts using WP built-in comment system.