FlexBooker seems to have been around as early as 2013 according to Archive.org – catering to the SMB market such as spa scheduling, doctor scheduling, lawyer scheduling etc. FlexBooker provides a clean and simple interface for appointment scheduling both in the backend and also in the front end – and does a better of job this than many of our competitors. Although again, the booking functionality looks very similar to that of Cronofy and may be infact the whitelabelling of that.
The backend does have a nice walk through wizard, however, it is legitamately difficult to navigate around it and does require remembering where scheduling settings are housed.
The above feature comparison was performed by our users who were FlexBooker users, and may not be 100% accurate. If there are ammendements that you find that need to be made or if you want to confirm the existence / non-existance of certain features please contact us on email@example.com.