The ep-3 Hotelsystem is an open source (MIT licensed) web application for hotels and similar facilities, which allows guests to check the availability of rooms and book them online.
Besides checking and booking of rooms, the system allows guests to choose from additional products and services the hotel has to offer or activate hidden ones with coupon codes.
The system was initially developed as a fork of the ep-3 Bookingsystem, but quickly evolved into an independent project.
The current version is not yet fully complete and might rather be considered as in beta status. Some planned features are still missing.