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I would go Openfire<br />
<a href="http://www.howtoforge.com/how-to-set-up-an-openfire-instant-messaging-server-on-centos-5.6" rel="ugc">http://www.howtoforge.com/how-to-set-up-an-openfire-instant-messaging-server-on-centos-5.6</a><br />
and for support I would check the community <a href="http://community.igniterealtime.org/community/support/openfire_(formerly_wildfire)_support" rel="ugc">http://community.igniterealtime.org/community/support/openfire_(formerly_wildfire)_support</a>
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openfire is best, I am using since a year and it works well
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Hi , everybody, i want install a messenger only for the employees of my company, exist any aplication for Centos ?
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Hi , everybody, i want install a messenger only for the employees of my company, exist any aplication for Centos ?

Corporative Messaging in Centos

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.

Linux

A Linux distribution is an operating system made as a software collection based on the Linux kernel and, often, on a package management system and are available for a variety of systems. A typical Linux distribution comprises a Linux kernel, GNU tools and libraries, additional software, documentation, a window system (the most common being the X Window System), a window manager, and a desktop environment. Most Linux systems are open-source software made available both as compiled binaries and in source code form, allowing modifications to the original software. Over three hundred distributions are in active development, including commercially backed distributions (such as Fedora, openSUSE and Ubuntu) and community-driven distributions (such as Debian, Slackware, Gentoo and Arch Linux).

Linux Distributions

The variety of Linux distributions creates myriad issues relating to configuration and operations when computers are networked, not the least of which is the use of various network management applications, some of which are included with specific distributions, while others are standalone applications.