Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Instagress - Instagress is automation software for Instagram.
Facebook Local - Discover places to go and events happening near you
Instagram Analytics by Socialinsider - Get better at Instagram marketing by studying competition
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Addmefast - Building a website or network on Internet is no longer a hard task but promoting and marketing it is still a difficult task but not impossible.