Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform
Iventlist - Create an app for your event in minutes 🎟️
Event Hunt - Startups and Tech Events Curated By Locals
TechEvents.co - Tech and startup events aggregator
Zoho Backstage - Plan, run, and analyze your event— all from one place
Konflist - Curated list of tech conferences all around the world!