Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
GitHub Polls - Polls for GitHub issues and readme
Ticket Tailor - Ticket Tailor is an easy-to-use event ticketing platform that allows event organizers of all shapes and sizes to sell tickets online.
Octotree - Github on steroids
Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform
Metaverse - Democratized augmented reality platform: AR for everyone!