Garth Gutenberg

Lets you display a twitter feed in a sidebar widget. 
Caches last successful tweet retrieval and only updates if it successfully gets a new list from Twitter. 
Practically every element has a unique class so that it’s highly customizable via CSS.
There are various configuration options including:
<ul>
<li>Title</li>
<li>Twitter Username</li>
<li>Max Tweets to Display</li>
<li>HTML to override the View All link</li>
<li>Time Placement (whether or not the timestamp should appear before or after the tweet)</li>
<li>Time Format (uses PHP’s date() function for formatting)</li>
</ul>

GG Twitter

Peter Wilson

Display your latest tweets in a WordPress widget without slowing your 
website.
The Rapid Twitter Widget doesn’t apply any styling to your website, giving 
you complete control over the look.
Tweets and your content are loaded separately to ensure a delayed response 
from Twitter doesn’t slow down your website.
Now compatibile with Version 1.1 of the Twitter API.
<a href="http://app.net/" rel="nofollow ugc">App.net</a> users might like the <a href="https://wordpress.org/extend/plugins/rapid-adn-widget/">Rapid ADN Widget</a>.
<h3>Development on GitHub</h3>
Development of this plugin is taking place in a 
<a href="https://github.com/peterwilsoncc/rapid-twitter-widget" rel="nofollow ugc">GitHub repository</a>.
Only tagged releases will be added to the WordPress.org svn repository.

Rapid Twitter Widget

Display tweets from one or more Twitter accounts using a WordPress widget. Compatible with version…

GG Twitter vs Rapid Twitter Widget