Epiphany is a lean, but powerful Web browser for the GNOME desktop. Many of its features and extensions are similar to Firefox. For more details, see http:////projects.gnome.org/epiphany/.

Firefox is a web browser that runs on various platforms, including Linux, MacOS, and Windows. Its main features include customizable searches, pop-up blocking, RSS news feeds, password management, tabbed browsing, and some advanced security and privacy options. For more details, see http://www.mozilla.org/products/firefox/ or read Chapter 20, Browsing with Firefox.

Konqueror is a multiple application created for the KDE desktop. It acts as Web browser, file manager and document viewer. It supports most common web standards, such as CSS(2), Java applets, JavaScript and Netscape plug-ins, DOM, and SSL. For more details, see http://www.konqueror.org/ or read Chapter 19, Browsing with Konqueror.

Opera is a powerful web browser with an optional e-mail client and a chat module. Opera offers pop-up blocking, RSS feeds, built-in and customizable searches, a password manager, and tabbed browsing. For more details see http://www.opera.com/.

Evolution is a personal information management application for the GNOME desktop combining mail, calendar, and address book functionality. It offers advanced e-mail filter and search options, and allows to you to run Evolution as an Exchange or GroupWise client to integrate better into heterogeneous environments. For more details, see http://projects.gnome.org/evolution/ftp.

Kontact is the personal information management suite for the KDE desktop It includes e-mail, calendar, address book and Palm sync functions. It can act as client for Exchange or GroupWise client. Kontact combines several KDE applications (KMail, KAddressbook, KOrganizer, and KPilot) to form an entity providing all the PIM functionality you need. For more details, see http://www.kontact.org/ or read Chapter 11, Kontact: E-Mailing and Calendaring.

Mozilla Thunderbird is the e-mail client of the Mozilla suite. It is also available for Microsoft Windows and MacOS. For more details, see http://www.mozilla.com/en-US/thunderbird/

Konversation is the IRC client of the KDE desktop. Its features include support for SSL connections,strikeout, multichannel joins, away and unaway messages, ignore list functionality, Unicode, auto connect to a server, optional time stamps in chat windows, and configurable background colors. For more details, see http://konversation.kde.org.

Kopete is a very intuitive and easy-to-use instant messenger tool supporting protocols including IRC, ICQ, AIM, GroupWise Messenger, Yahoo, MSN, Gadu-Gadu, Lotus Sametime, SMS messages, and Jabber. For more details, see http://kopete.kde.org/ or read Chapter 15, Instant Messaging with Kopete.

Pidgin (previously Gaim) is a multi-platform instant messaging client supporting many commonly used instant messaging protocols, allowing the user to log into various different services from a single application. For more details, see http://pidgin.im/

XChat is an IRC chat program for both Linux and Windows. It allows to join multiple IRC channels (chat rooms) at the same time, talk publicly, private one-on-one conversations etc. Even file transfers are possible. For more details, see http://www.xchat.org/.

Ekiga (previously GnomeMeeting) is a free and open source video conferencing and VoIP application. Ekiga supports both the SIP and H.323 protocols and is fully interoperable with Microsoft NetMeeting and LifeMeeting. For more details see http://www.ekiga.org/

Skype is an application for several platforms (Linux, Windows, Mac Os X) that can be used for phone calls over the Internet with a good sound quality and with end-to-end encryption. When using Skype, configuring the firewall or router is not necessary. For more details, see http://www.skype.com/.

gftp is an FTP client using the GTK toolkit. Its features include simultaneous downloads, resume of interrupted file transfers, file transfer queues, download of entire directories, FTP proxy support, remote directory caching, passive and nonpassive file transfers, and drag and drop support. For more details, see http://gftp.seul.org/.

KBear is a graphical FTP client with the ability to connect to multiple hosts simultaneously. The user can copy or move files or directories between the hosts by drag and drop or cut and paste. It also has a dynamic site database. For more details, see http://sourceforge.net/projects/kbear/.