Push for Pizza - The easiest way to order pizza. EVER.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Pizzatime - Host a pizza party for your remote team
Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform
Suspended Pizza - In parts of Italy, when someone goes into a coffee shop and orders an espresso, they simply pay for two: the customer drinks one and the other one remains “suspended” until someone else orders comes in and orders it.
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