tcp client

DreamMail is one of the best email client software.

InvenSys is the application than makes the client-less audit possible.

DMDirc is a cross-platform IRC client written in Java.

integrate gauges into their client-server and web-based applications

Tuxitty is another msn messenger client.

MOVEit Freely is a free command line FTP/secure FTP SSL (FTPS) client

A java chat client.

Claws Mail is a GTK+ based, lightweight, and fast e-mail client and newsreader.

Friendly yet powerful client-server voice and text chat for LAN or Internet.

business email client software with contact management and email marketing.