Event Hunt - Startups and Tech Events Curated By Locals
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
TechEvents.co - Tech and startup events aggregator
pretix - pretix helps you to sell tickets for your event in an easy way. It supports multi-lingual events and provides a wide range of features
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Ticket Tribe - Sell tickets online with no fees per ticket