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Pidgin is an instant messaging program for Windows, Linux, BSD, and other Unixes. You can talk to your friends using AIM, ICQ, Jabber/XMPP, MSN Messenger, Yahoo!, Bonjour, Gadu-Gadu, IRC, Novell GroupWise Messenger, QQ, Lotus Sametime, SILC, SIMPLE
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, and Zephyr.
Pidgin can log in to multiple accounts on multiple IM networks simultaneously. This means that you can be chatting with friends on AIM, talking to a friend on Yahoo Messenger, and sitting in an IRC channel all at the same time.
Pidgin supports many features of the various networks, such as file transfer, away messages, and typing notification. It also goes beyond that and provides many unique features.
[Previously known as "Gaim".] [Less]
The most used console irc client
Unified OS X instant messaging platform
X-Chat is a fully-featured graphical IRC client using the GTK toolkit. It can be compiled to use GNOME and Perl scripting.
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 without the main application knowing anything about
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the plugin being loaded. The goal of Kopete is to provide users with a standard and easy to use interface between all of their instant messaging systems, but at the same time also providing developers with the ease of writing plugins to support a new protocol. The core Kopete development team provides a handful of plugins that most users can use, in addition to templates for new developers to base a plugin on. [Less]
Traditionally, chat clients on the Mac have been anything but glamorous. Colloquy is an advanced IRC, SILC & ICB client which aims to fill this void. By adhering to Mac OS X interface conventions, Colloquy has the look and feel of a quality Mac application.
Konversation is a user-friendly IRC client for the KDE Desktop environment.
Psi is a leading instant messaging / real-time communications client for the Jabber network (using the XMPP protocol). It is cross platform, available for Windows, Mac OS X and X11 (Linux, BSD, Solaris etc.) platforms. It uses the Qt library.
It
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aims to be (and is famous for being) standards compliant and stable. It is also at the cutting edge of XMPP development, with several of the authors very actively involved in the XMPP standards extension process. [Less]
ejabberd is an instant messaging server written in Erlang. ejabberd is cross-platform, distributed, fault-tolerant, and based on open standards to achieve real-time communication (Jabber/XMPP).
Miranda is the next generation Miranda IM client for Windows.
The goal of Gajim is to provide a full featured and easy to use Jabber client. Gajim works nicely with GNOME, but does not require it to run.
Beagle is a desktop-independent service for indexing and searching
your data. The Beagle daemon transparently monitors your data and updates the index to reflect any changes. On an inotify-enabled system, these updates (e.g. new files, emails
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, chat) happen more-or-less in real time. Beagle supports many different file formats and can index files/email/browsing history/chat logs/RSS feeds etc. [Less]
A chat network to IRC gateway. Currently supports Jabber, MSN, OSCAR (AIM/ICQ) and Yahoo protocols.
ChatZilla is a clean and easy to use Internet relay chat (IRC) client built on the Mozilla platform which provides all the usual features: multiple servers, a built-in list of standard networks, easy searching and sorting of available channels
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, logging, and DCC chat and file transfers, plus easy customization with JavaScript plug-ins and CSS styling. [Less]
XChat-GNOME is a new frontend to the popular X-Chat IRC client which is designed with the user interface foremost in mind. Historically, the OSS desktop has been steadily improving in usability, accessibility, and general slickness, yet the world of
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IRC clients has not kept up.
GNOME’s philosophy in terms of user interfaces has been progressing towards presenting the user with few options and sane defaults.
The authors decided that the GTK+ frontend provided excessive customizability without sufficient organization, which lead to clutter and confusion.
As such, XChat-GNOME was born, and is gaining popularity as an IRC client for people who care more about chatting than tweaking settings. If anyone is interested in helping out with the project, stop by #xchat-gnome on irc.freenode.net. [Less]
InspIRCd is a modular C++ IRC Daemon (ircd) for Linux, BSD and Windows systems created to provide a stable, modern, lightweight irc server from scratch and provide a vast number of features in a modularised form using an advanced module API. By
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keeping the functionality of the main core to a minimum we hope to increase the stability and speed of our project and make it customisable to the needs of many users. InspIRCd is designed primarily to be a custom irc server for the chatspike irc network (irc.chatspike.net) but we are releasing it into the public domain under GPL so that you may benefit yourself from our work. The project is written from scratch, avoiding the inherent instability under large loads which can be seen in many other irc server distributions. [Less]
KVIrc is a free portable IRC client based on the excellent Qt GUI toolkit. KVIrc is being written by Szymon Stefanek and the KVIrc Development Team with the contribution of many IRC addicted developers around the world.
Smack is an Open Source XMPP (Jabber) client library for instant messaging and presence. A pure Java library, it can be embedded into your applications to create anything from a full XMPP client to simple XMPP integrations such as sending notification messages.
Alvaro's Messenger is a Tcl/Tk client for MSN Messenger. Its features include multi-language support, smileys, docking support for KDE 3 and GNOME 2 (FreeDesktop compatibility), logging, profiles support, email notification, customizable sounds
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, group management, file transfers with NAT support, and proxy support. Some special features include the possibility of knowing who has deleted you from his/her list, connecting "silently" (appearing invisible), and so on. [Less]
Empathy consists of a rich set of reusable instant messaging widgets, and a GNOME client using those widgets. It uses Telepathy and Nokia's Mission Control, and reuses Gossip's UI. The main goal is to permit desktop integration by providing
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libempathy and libempathy-gtk libraries. libempathy-gtk is a set of powerful widgets that can be embeded into any GNOME application. [Less]
Supybot is a cross-platform IRC bot written in Python, known to run anywhere Python runs, which includes all *nices, and Windows.
1. Supybot is actively developed.
2. Supybot offers nested commands.
3. Supybot has a powerful and
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flexible capability system for handling security.
4. Supybot includes many plugins , and has many more ripe for the picking on this very website.
5. Supybot supports multiple servers.
6. Supybot supports multiple channels.
7. Supybot is user-friendly.
8. Supybot is developer-friendly.
9. Supybot is stable.
The stability of a Supybot is only limited by the uptime of the host it runs on. Multi-month uptimes are the norm, rather than the exception.
10. Supybot is here, now. [Less]
An XMPP server.
jabberd 2.x series is the next generation of the Jabber/XMPP server.
It has been rewritten from the ground up to be scalable, architecturally sound and to support the latest protocol extensions coming out of the XSF.
Note
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that jabberd2 is NOT a new version of jabberd14. It's a different project with distinct codebase and features. [Less]
ECF is a framework for building communications functions into Eclipse-based tools and applications. It can be used to create other plugins, tools, or full applications that require asynchronous point-to-point or publish-and-subscribe messaging.
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ECF is also a small set of applications for real-time developer communication, including instant messaging, file sharing, and real-time collaboration. [Less]
skype4pidgin is a plugin for libpurple programs such as Pidgin or Adium, to be able to use the Skype API to control and use Skype to send IM's
Verse is a network protocol that lets multiple applications act together as one large application by sharing data over a network. If one application makes a change to shared data, the change is distributed instantly to all the other interested clients.
Atheme is a portable, secure set of open source, modular IRC services released under the BSD license, designed to run on many IRCds.
Unlike alternative packages, Atheme's core is minimalistic, providing only core functionality. Atheme is a complete services set, excluding features designed for oper abuse.
Tigase Jabber/XMPP Server is Open Source and Free (GPLv3) Java server using all available features in last JDKs. It uses NIO for network communication, selectors, concurrent JDK framework, security library and so on. All these functionalities are
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available directly from JDK so the need for external libraries is limited to minimum. Actually it doesn't use any external library at run-time. A few third-party libraries are used for development such as JUnit, Forrest, UnitTestsGen and ANT [Less]
Citadel is a highly integrated Groupware Platform with a Web 2.0 enabled Web interface, but also providing SMTP, IMAP, POP3 and GroupDAV access to its content.
Citadel offers Versatile email services with very low administration needed. It provides its own implementations of these server protocols:
Imap, Pop3, SMTP, ManageSieve, Citadel.
WeeChat is a fast and light IRC client for many operating systems. It is customizable and extensible with scripts.
CenterIM is a fork of CenterICQ, an ncurses-based IM client. It supports ICQ, MSN, AIM, Yahoo, Gadu-Gadu, Live Journal, IRC, RSS and Jabber protocols