Wix Bookings makes it possible for customers to schedule appointments and classes right on the website.
https://www.wix.com/app-market/wix-bookings/overview
Widgets · Bookings
Get access to data on 1,314,485 websites that are Wix Bookings Customers. We know of 946,375 live websites using Wix Bookings and an additional 368,110 sites that used Wix Bookings historically and 700,908 websites in the United States.
Get a list of 1,314,485 websites using Wix Bookings which includes location information, hosting data, contact details, 946,375 currently live websites and an additional 108,503 domains that redirect to sites in this list. 368,110 sites that used this technology previously and 700,908 websites in the United States currently using Wix Bookings.