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

oniswap

Important notice: Twitter shut down their v1 API and use now the v1.1, to update your mini twitter feed you need to go on https://twitter.com/settings/widgets/new create a new widget and get your Twitter widget ID. You can update the id on the shortcode or widget. ([minitwitter id=”TWITTER_WIDGET_ID” username=”YOUR_USERNAME”] or in the field “id” in the widget section). 
You get this Twitter Widget ID from the code provided by Twitter when you create this widget: data-widget-id=”TWITTER_WIDGET_ID” or in the URL https://twitter.com/settings/widgets/TWITTER_WIDGET_ID/edit.
The plugin “mini Twitter feed” or twitter timeline puts Twitter on your WordPress blog, you can add your tweets or the tweets from the folks you like, lists, queries…
You can display up to 100 tweets within 7 days (limit set by Twitter’s Search API).
It displays tweets from your feed or from the Twitter Search, from a list or from your favorite users. It is very flexible and modular.

Mini twitter feed

Embed your twitter feed or the twitter timeline from your favorite users on your Wordpress blog. Shortcodes and widgets are used.

GG Twitter vs Mini twitter feed