Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Direcon - Instagram Management Tool - Drive growth at every stage of your Instagram account.
Facebook Local - Discover places to go and events happening near you
Buffer for Instagram - Plan, track, and analyze your Instagram marketing
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Instagram Analytics - Professional Instagram analytics