Just surfing the net and found http://www.phpmylicense.net/ I wonder they encrypy the source code with eval()! and they charge $197! Is here someone familiar with this product? or this? http://www.php-protection.com/ or this? http://www.maiancube.com/demos.html Some years ago I was using http://www.phplicengine.com and it was not very good, because I found links above, I checked this website after many years again and it looks they improved it a lot and they released their latest version just recently: http://www.phplicengine.com/screenshots/ Any idea about these all?