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.

breely

Fill your schedule, grow your business. 
Breely is the most flexible platform allowing you build the exact appointment scheduling, forms, and workflows for your business.
Breely offers 1:1 appointment scheduling, group classes, workshops, and class series scheduling. 
You can also create forms, waivers, and more. This plugin allows you to embed the forms 
created in Breely into your WordPress site.

Breely

Embed Breely appointment booking and forms into your site.

CGM Event Calendar vs Breely