schoorbs is a Scripts software developed by xhochy. After our trial and test, the software is proved to be official, secure and free. Here is the official description for schoorbs:
Edit by Brothersoft: Schoorbs is a free room/resource booking system licensed under the GPLv2 which is served as a web application using PHP and MySQL/PostgreSQL. * Access it using your favorite webbrowser (valid XHTML 1.1) * Runs on every webserver supporting PHP(>= 4.3) and MySQL or PostgreSQL. * Ensures that conflicting entries cannot be entered. * Selectable Day / Week / Month views. * Very flexible options on resource/room bookings. * Multiple authentication levels (read-only, user, administrator). * Multiple languages supported (translated to Czech, Chinese, Danish, Dutch, Finnish, French, German, Greek, Italian, Japanese, Norwegian, Portuguese, Spanish, Swedish). * Communication with Schoorbs through a REST-API is also possible, so making own scripts/programs using Schoorbs is possible without using PHP. * Uses the equal database structure as MRBS, you even could use both in parallel, if you want to evaluate them. you can free download schoorbs 1.0 now.