smtp relay

XChat is a popular Internet Relay Chat (IRC) client.

NCD relay controllers offer computer control from the RS-232 serial port

Night Light IRC Proxy is a multi-user IRC (Internet Relay Chat) proxy.

msmtp is an SMTP client with a sendmail compatible interface.

Bulk Email software with Built in SMTP Server sends 30,000 emails / hour.

Mail spam filter (SMTP/POP3), includes award-winning SpamAssassin filter engine

Open source AJAX webmail script for existing POP3/IMAP/SMTP server or cPanel

AXIGEN FREE mail server-(E)SMTP,POP3,IMAP4,WebMail,RPOP,Groupware,basic support

SendSMTP can send SMTP email via command-line instructions or interactively.

AXIGEN FREE mail server-(E)SMTP,POP3,IMAP4,WebMail,RPOP,Groupware,basic support.