EventOn Wishlist Addon GPL Overview:

Using our WishList addon allows your customers to like events on your calendar as well as add them to their wishlist to revisit later.

Which event is liked by most users

Wishlist addon can be used to create bookmarks, likes, or simply as a wishlist of events. This conveniently allows logged-in users to remember events they are interested in.

Additionally, customize your events with different icons and words to meet your needs.

EventOn Wishlist Addon GPL Features:

• I Heart this Event
  Logged-in users of your website can “heart” events they like and thus add them to their personal WishList.
• My Wishlist Manager
  Wishlist manager, easily added via shortcode to any page, allows logged-in users to see a list of all upcoming events they have liked from your website. Users can also unlike events from wishlist managers.
• Like Count
  Logged-in users can see how many other users have already liked events right from the calendar eventTop.
• Logged-in User Only
  WishList addon is restricted to logged-in users only to allow you to track which events each person likes.