Admidio is a free PHP based membership management system for organizations and groups. It also offers an event manager module to plan date, time and place of events.
Admidio Events displays such event data in the Widget area of a WordPress page, for example the home page of the sports club the members belong to. The number of upcoming events shown is configurable. Also the Widget provides a collapsed (event name, optional: date) or expanded (all event data) view which can be toggled between. The data from Admidio to WordPress is transferred via RSS.
Please note that the free icon font Genericons has to be available with your WordPress installation. Either by using a theme that includes Genericons out of the box (for example Twenty Thirteen or Twenty Fourteen) or by using a Plugin that adds Genericons to your theme (for example Genericon’d).
This Plugin needs PHP version 5.3 or higher. It is recommended to use Admidio version 2.4.6 or higher (earlier versions haven’t been tested).