Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Trickster - Keep track of recent files on your Mac
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Work For FANG - No-bullshit guide to land a job in top tech companies
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.
Viscom SlideShow Creator - Free Create photo slideshow movies and presentations for 4 steps.