Add an event calendar to your website! Great for fitness centers, community centers, organizations of any size. Create event categories for easy sorting.
More info:
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View a demo here: http://www.creativegraymatter.com/calendar
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For more information check out http://www.creativegraymatter.com/blog/wordpress-events-calendar
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CGM Event Calendar

Creates a classes and events calendar for your site.  Handles repeating entries and provides multiple views.

disinfor

A text widget based on the default WordPress text widget. Allows users to add custom classes to the widget container and the title tag.
It takes this: 
<h3 class=”widget-title”>
And allows you to do this: 
<h3 class=”widget-title custom-class custom-class-2 etc”>
It also allows users to add custom classes to the widget container.
NEW 
If the sidebar registration in your theme’s function file does not contain any HTML for before or after the title of the widget, this now will now fill that with an <code><h4></code> tag set.
<h3>General Information</h3>
This plugin is absolutely free to use. I made it for a specific personal purpose and decided to share with everyone else. I will try and update this for the future but can’t guarantee.

Text Widget with Class

A text widget based on the default Wordpress text widget. Allows users to add custom classes to the widget container and the title tag.

CGM Event Calendar vs Text Widget with Class