Haris Zulfiqar

Twounter simply returns the number of followers for a twitter username.
You have two options to fetch the number of followers for a username.
You can use the function <code><?php echo twounter('username') ?></code> in your template files or you can use the twounter 
shortcode <code>[twounter]username[/twounter]</code>in post/page editor to return the numbers of followers for the 
username.

Twounter

Twounter returns the number of followers of a twitter user in simple text format.

mclarty

Twitter Hashtag Feed Widget creates a simple, clean Twitter feed of a specified hashtag. This widget is specifically designed to render a lightweight widget that can be completely styled by the user through CSS.
<h3>Custom Theming</h3>
All widgets have the CSS class .widget_twitter_hashtag_feed_widget for uniform styling across all widgets on the site.

Twitter Hashtag Feed Widget

A sidebar widget that creates a simple, clean Twitter feed of a specified hashtag.

Twounter vs Twitter Hashtag Feed Widget