WordPress Plugins 

• BuzzerTwit.com - Submit your Twitter Apps (All in one App repository for Twitter widgets, Wordpress plugins, extensions, etc)
• Socialized Card New!: Lets your subscribers access your entire social network profiles. Socialized Card holds your entire social identity. Let your viewers connect with you on all social network site's you belongs to.
• Twitter Goodies: Twitter Goodies Profile Widget + Twitter Goodies Search Widget + Twitter Integration (wp to twitter). This plugin will show your twitter tweets under Sidebar Area (Widget), Post and/or Pages. Tweets will REFRESH AUTOMATICALLY. Also it has reply option inside widget on mouse over action. Please go to Appearance -> Widgets -> Twitter Goodies to add it under Sidebar Area. Admin panel option available under Settings -> Twitter Goodies to set different color combination and twitter widget options. This twitter widget is using Twitter Goodies APIs. Integrate Post to Twitter option added to v1.0.1. Best Twitter Tools and nice Twitter Widget GUI.
• • Download from Wordpress Extend: http://wordpress.org/extend/plugins/twitter-goodies/