In our research of scheduling and booking tools, Wix and Squarespace both score 5 out of 5. The two website builders include an online booking tool as a built-in feature, meaning you don’t need to source it from a third-party provider. You can also connect Wix and Squarespace’s scheduling system with your external calendar, as well as integrate payments, so clients and customers can secure and pay for their appointments in a single place.