Internet

• FHMail
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• Mpop
  Mpop retrieves mails from POP3 mailboxes and delivers them via a mail delivery agent (MDA) such as procmail. ...
  
• nail
  Nail is a mail user agent derived from Berkeley Mail 8.1. It is intended to provide the functionality of the POSIX mailx command with built-in support for MIME messages, IMAP, POP3, and SMTP. ...
  
• paranoy
  paranoy is a fast, light, open-source, but overall safe mail client. It includes SSL and GPG support, and it saves encrypted mailbox and configuration files. It has a text mode interface based on ncu...
  
• Maildrop
  Maildrop is a powerful mail filter/mail delivery agent. Maildrop works with your mail server to deliver incoming E-mail. ...
  
• KMail
  KMail is a fully-featured email client that fits nicely into the K Desktop Environment, KDE. It has features such as support for IMAP, POP3, multiple accounts, powerful filters, PGP/GnuPG privacy, in...
  
• surgemail
  SurgeMail is the fastest, most robust and secure, full-featured email server on the market today supporting all the protocols and standards. ...
  
• W3Mail
  W3Mail - Feature rich POP3/IMAP4 WebMail software. ...
  
• Postilion
  Postilion - Mail user agent. ...
  
• nmzmail
  nmzmail is a tool to use the namazu2 search engine from within the mutt mail reader to search mail stored in maildir folders. Based on the result of the namazu query, nmzmail generates a maildir fold...
  
• Kadu
  Kadu project was started in 2001 as a simple KDE API try-out. Eventually, it became the most popular Gadu-Gadu client for Linux and other Unices or MacOSX. Kadu depends on Qt library version 3.x. Be...
  
• Licq
  Modular ICQ client. Offers many plugins, you may choose from many GUIs (GTK, Qt, console). Supports all standard functions like contact list (synchronized with ICQ server), file transfers, chat mo...
  
• SIM (Simple Instant Messenger)
  ICQ client for X11/Qt/KDE (also available for Windows and Mac) ...
  
• aMSN
  A MSN Messenger clone for Linux. ...
  
• TleenX
  TleenX is a Tlen.pl instant messaging system client, which works in X-Window environment using GTK+ library to build interface. The common library for TleenX is libtlen, which we have to install befo...
  
• Kmess
  MSN Messanger for KDE. ...
  
• linphone
  Linphone allows you to make two-party phone calls using an IP network. Easy to use, it has a gnome graphical interface. As it uses a very minimal implementation of the Session Initiation Protocol (SI...
  
• Gaim
  Gaim is a multi-protocol instant messaging client for Linux, BSD, MacOS X, and Windows. It is compatible with AIM (Oscar and TOC protocols), ICQ, MSN Messenger, Yahoo, IRC, Jabber, Gadu-Gadu, and Zep...
  
• Centericq
  Console instant messenger. Supports ICQ, Yahoo, AIM, Jabber with SSL, RSS-news feeds. Works both with server-side or local contact list, import it from other clients, saves messages and events into h...
  
• Micq
  mICQ (Matt's ICQ Clone) is a portable, small, yet powerful console-based ICQ client. It supports password changing, auto-away, creation of new accounts, and other features that makes it a very comple...
  
• Kopete
  Kopete is a flexible and extendable multiple protocol instant messaging system designed as a plugin-based system. All protocols are plugins and allow modular installation, configuration, and usage ...
  
• Yahoo! Messenger for Unix
  Yahoo! Messenger for Unix. ...
  
• Xchat
  IRC client. Support for all comunication functions and plugins written in some from scripting languages. The most interesting is plugins for remote control of Xmms. More...
  
• irssi
  Irssi is a modular IRC client for UNIX that currently has only text mode user interface. The best IRC klient, which I know:-) ...
  
• KVirc
  Gorgious IRC client. ...