[simonk]

http://www.tungle.me ties into Google Calendar & Google Apps as well.

I know a company that build billing for medical and they tried to build out a product like this but the people running it just hated it. They either get people all booked in horrible times or for a non-busy place people see that and associate it with being bad. One solution they never tried is trying to make it like the Apple store booking engine.

[ktsmith]

This is probably the best version of online booking I've seen or had to use. The problems with most of these sites is the fact that they require you to send customers to a third party. If tungle.me could run embedded in the clients site, and integrate in any meaningful way with existing client databases it would be a home run. As it is my own clients will continue to request the very basic booking system that I have built simply because the customer never has to leave their site and it will take advantage of their existing customer database and billing systems.

[psm42]

People using bookingly.com to accept bookings have the option of adding a booking widget to their site, which lets people make bookings with them directly on their site.