
PAM_passwdqc
PAM_passwdqc is a password strength checking module for 
Perl-LDAP 
Perl LDAP is a collection of Perl modules that provides an 
Pine
Pine is a program designed for sending, receiving, and filing email messages.
Postfix
PostfIx is an alternative to the sendmail program
PostgreSQL
PostgreSQL is an 
ProcMail
ProcMail is a mail processing and filtering utility. Incoming mail can be sorted by sender, subject line, length of message, and keywords in the message.
ProFTPD
ProFTPD is a secure and configurable FTP server.
Python
Python is an interpreted, interactive, 
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