Schoorbs is a free, GPL, system to make room and resource bookings through a WebGUI using PHP and MySQL/PostgreSQL. Schoorbs is a fork of MRBS. Since then various changes considering security, usability and portability were made.
Schoorbs has the following features:
* book rooms & resources grouped by areas
* activity could be log via a simple logging interface
* code is automatically tested by several unit tests
* easy stylable through the usage of a template system
* produces valid XHTML 1.1 output
* packages for Debian and Ubuntu are available
* well documented on the Schoorbs website
These details are provided for information only. No information here is legal advice and should not be used as such.