Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Pliim - One click and be ready to go up on stage and present!
Event Hunt - Startups and Tech Events Curated By Locals
Hidden Bar - A ultra-light MacOS utility that helps hide menu bar icons.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Hocus Focus - A Mac menu bar utility that hides your inactive windows