Event Hunt - Startups and Tech Events Curated By Locals
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Konflist - Curated list of tech conferences all around the world!
Ticket Tribe - Sell tickets online with no fees per ticket
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