Web Software - sites beginning with: P

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• PHP - Hypertext Preprocessor   
  PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML. PHP license
  
  http://www.php.net/

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• mod_perl   
  mod_perl brings together the full power of the Perl programming language and the Apache HTTP server. mod_perl gives you a persistent Perl interpreter embedded in your web server, licensed under The Apache Software License.
  
  http://perl.apache.org/

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• ProFTPD   
  ProFTPD is a secure and configurable FTP server which takes Apache-style directives. GPLed
  
  http://www.proftpd.org/

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