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 1,188,001 websites that are Wix Bookings Customers. We know of 926,370 live websites using Wix Bookings and an additional 261,631 sites that used Wix Bookings historically and 687,712 websites in the United States.
Get a list of 1,188,001 websites using Wix Bookings which includes location information, hosting data, contact details, 926,370 currently live websites and an additional 110,234 domains that redirect to sites in this list. 261,631 sites that used this technology previously and 687,712 websites in the United States currently using Wix Bookings.