gmailsender is a GTK#/Mono based mail sending
application. Use it to send email through an SMTP
server (only without authentication) with an
optional attached file.
SB Timmy is an IMAP client for WAP/WML devices. It
fully supports MIME, including allowing the user
to download attachments to their mobile device,
and supports sending mail via SMTP.
An ncurses RSS (and more) reader.
DJ software for Linux.