Seats.io is an interactive tool for online ticket sellers. Ticket vendors can use the Seats.io chart drawing tool to create seating charts for their website. Ticket buyers can then use the interactive chat to select the seats they want.
Seats.io offers a REST API for booking and releasing seats. Use the API to instantly push new seating situations to all currently connected clients to avoid double booking. All requests are done over SSL and an API Key is required.