TechEvents.co - Tech and startup events aggregator
Event Hunt - Startups and Tech Events Curated By Locals
Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform
Hero35 - The best place to watch curated dev conference talks
Konflist - Curated list of tech conferences all around the world!
Leade.rs - Leaders matches event organizers with speakers in tech.