First Step on building PHP-GTK suitable for Desktop is hiding the code. Plenty of options out there. eGuardian http://sourceguardian.com/ POBS GPL - Obfuscator http://pobs.mywalhalla.net/start.htm Zend Encoder http://www.zend.com/store/products/zend-encoder.php PHP-Screw http://sourceforge.net/projects/php-screw/ microCode http://www.microcode.de/index.php3?LANGUAGE=english ionCube encoder http://www.ioncube.com/encoder/ APC (Advanced PHP Cache included code to do something similar) - so bcompiler was born!