Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Flickr - image and video hosting website
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
Calendify - Calendify is an event community where you can share, publish, and subscribe to event calendars. It helps you to stay informed about what you are interested in and what is yet to come.
Google Photos - All your photos are backed up safely, organized and labeled automatically, so you can find them fast, and share them how you like.