Penguin Greetings (pgreet) engine is a web-based greeting cards for LINUX and other UNIX-based systems written in Perl.

PhpXmail is a web based management software for the Xmail mail server written in php.

Virtual Mail for Postfix helps you to manage virtual pop3/imap domains using Postfix, Courier and PostgreSQL.

Reqtool is a pure perl application that both handles email requests and provides a web interface to track, edit and resolve these email requests.

qmailAdmin is a free software package that provides a web interface for managing a qmail system with virtual domains.

bounce 1.3.5 - Mail-bounce is a general-purpose Perl program for returning E-mail to the sender.

Fetchmail is a full-featured and robust remote mail retrieval and forwarding utility.

Fdm Script is a program to fetch mail and deliver it in various ways depending on as user-supplied ruleset.

Eremove is a simple application for linux, based on GTK, for logging into a POP3 mail account.

Getmail is a mail retriever designed to allow you to get your mail from one or more mail accounts.

GMime suite provides a core library and set of utilities which may be used for the creation and parsing of messages using the Multipurpose Internet Mail Extension (MIME).

Ishmail is a graphical mail reader for Unix systems.

Perl Webmail is a CGI/mod_perl application that interfaces with external POP3 and SMTP services.

Nameko can retrieve message from a POP3 server, parse e-mails, send email through SMTP server, and more.

Heirloom mailx (previously known as nail) is a mail user agent for Unix systems.

mpop is a POP3 client: it retrieves mail from POP3 mailboxes.

Popper is a Web based mail client that allows you to access your personal mailboxes on POP3 servers.

XMail Application is an Internet and intranet mail server.

libspopc is a simple and light pop3 mail client library used by small programs.

Peephole is a GNU/linux server that periodically checks users' mailboxes harvesting only last emails, extracting user-defined regular espressions.

KMail is the email component of Kontact, the integrated personal information manager of KDE.

deepOfix Mail Server is a popular GNU/Linux server operating system.

Pantomime provides a set of Objective-C classes that model a mail system.

Elmo is a feature-rich, highly configurable and fast mail client.

Dada Mail is an intuitive, web-based e-mail list management system.