Huntathon - Browse and submit Product Hunt Global Hackathon projects
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
CoFoundersLab - Meet 250,000+ entrepreneurs online
Ticket Tribe - Sell tickets online with no fees per ticket
Hackathon Match - Find collaborators for the Product Hunt Global Hackathon
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