Moonicorn - free reservation booking engine

Moonicorn is a free web reservation booking engine. You can use it to embed a widget in your website for taking reservations. Customers can book a reservation from within your website and optionally take credit cards as well. It offers both a free and a premium service. The free version is all you need to be able to accept reservations via your website. While the premium version offers more features and is reasonably priced.

See a demo screencast here: http://www.moonicorn.com/home/demo