telnet client

Native Google Music client (unofficial).

Email client with messages organized by person.

Email client focused on speed.

Excellent FTP/SFTP client.

Downloads Web-based mail to a POP client.

Share all your multimedia with standard UPnP-enabled client devices.

Popular BitTorrent client.

Pinboard and Delicious client.

Immersive, full-screen Web client.

Chat using this RubyCocoa IRC client.