Roadsend thanks the many authors of the original PHP programming language. This version is available from the PHP Group at http://www.php.net.
Roadsend PHP is written in Bigloo Scheme and C. Bigloo is an open source Scheme implementation available at http://www-sop.inria.fr/mimosa/fp/Bigloo/.
Some parts of Roadsend PHP use code from bigloo-lib and libwebserver.
The Windows edition of the Roadsend Compiler makes use of the MinGW Development environment, available at http://www.mingw.org.
The Windows edition of the Roadsend Compiler includes the Glade User Interface Builder for GTK, available at http://glade.gnome.org.
The Roadsend PHP Apache modules includes software developed by the Apache Software Foundation.