maksbd19

This plugin will add a custom post type for event. In that you will be able to add/edit/remove events just as you do to your 
posts. There are 9 parameters are by default supported. These are-
<ul>
<li>Event date</li>
<li>Event Duration</li>
<li>Offical Website</li>
<li>City</li>
<li>State</li>
<li>Country</li>
<li>Event Gallery</li>
<li>Event Categories</li>
<li>Event Tags</li>
</ul>
And also you can add title, description, featured image to your event.
In the widget you can specify the title, maximum height of the widget, number of events to show and to display event from a 
category or tag.
Event state, city and countries are included in the search parameter. That means if someone search anything that matches with these 
meta values, they will show up in the search results.

Event Management Plugin

This plugin will add functionality in your site to add/edit/remove events and display them in a widget.

Wild Apricot

The <a href="http://www.wildapricot.com/" rel="nofollow ugc">Wild Apricot</a> Login plugin allows you to restrict content on your WordPress to your Wild Apricot members, and provide access to restricted Wild Apricot content such as member directories and member-only events. Any restricted Wild Apricot content – embedded using Wild Apricot widgets – can be accessed without further authentication.
You can display a login button for single sign-on by adding a widget – installed along with the Wild Apricot Login plugin – to the header in your WordPress theme layout, or by inserting a shortcode in your page content. A shortcode can be added to a WordPress page to restrict WordPress content to Wild Apricot members. As well, you can use the plugin to add Wild Apricot membership levels as WordPress roles.

Wild Apricot Login

Provides single sign-on service for Wild Apricot members to provide access to restricted Wild Apricot content.

Event Management Plugin vs Wild Apricot Login