I need an app or custom configuration to be able to book resources from an site outside of salesforce. Resources in terms of events, like a tour of the city etc. Which will be recurring several times a day, but will have limited space. I need to display an calendar view to the users - and let them select a specific time - fill in their details and let the site send the information to Salesforce.
How could I accomplish the above? Is there an app which can handle it, and how about letting external users access the booking system through a website?
I've looked at Booker25 - but it seems overkill for this simple booking system.