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

H. Peter Pfeufer

Add a widget to your sidebar to show your latest tweets.
A long time I searched a sidebarwidget to show my last tweets in my blog. So I found “Tweetbox” from Rob Carr. But the Sourcecode it generates was terribly. So my friend <a href="http://sharjes.de" rel="nofollow ugc">Simon</a> am I made our own plugin, based on Tweetbox.
Features
<ul>
<li>Easy install.</li>
<li>Panel for easy configuration (Design -> Widgets).</li>
</ul>
Languages
<ul>
<li>English</li>
<li>German</li>
<li>Spanish (thanks to <a href="http://www.rubenas.com" rel="nofollow ugc">Rubén Álvarez</a>)</li>
<li>French (thanks to <a href="http://creativejuiz.fr" rel="nofollow ugc">Geoffrey</a>)</li>
<li>Arabic (Saudi Arabia) (thanks to Hammad Alshammari)</li>
<li>Swedish (thanks to <a href="http://www.naxiait.se/" rel="nofollow ugc">Niklas Ekman</a>)</li>
</ul>

TweetView-Widget

Add a widget to your sidebar to show your latest tweets.

GG Twitter vs TweetView-Widget