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.

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5.0/5.0

Based on 11 user ratings.

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about 1 year ago Avatar
Citadel is the un-taped groupware

  by ax25

If you think of writing groupware and have not checked out the capabilities of citadel, you should check the documentation. The documentation about how you can make use of the software from a programming standpoint is out if this world!

This software has most of what you would want in groupware (hint, user driven additions). In addition, the project is responsive to additions that will add to the project and are extremely ... [More] helpful.

Easy to set up. Easy to use, Most importantly, features that are well thought out and implemented.

Love this project!

Thanks to all the Citadel folks for this great package!

ax25
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6 months ago Avatar
Searching for a mail server - found some groupware

  by mcsonique

I use citadel as an easy to install and use mail server solution. Being in a hurry installing an configuring mail services for customers that want to do basic administration themselves after setup I found citadel is a great choice as it provides a clean and easy installation (build and config scripts, debian packages) and both a shell- and a web-bases administration UI.

It's nice to have all those features as Calendaring, Address books ... [More] and stuff but what I love most about it that you can hand an installation over to a non-technician with the good feeling that he can add and alter e-mail users himself. And: there is quite zero integration work to do: IMAP, POP, SSL etc. just works out of the box. No hacking around in cryptic config files. It just works.

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    OpenSSL vulnerability in Debian Etch and Ubuntu

    A vulnerability involving predictable random numbers has been discovered in the OpenSSL packages included with Debian Etch and Ubuntu systems. This vulnerability affects all software which makes use of SSL/TLS encrypted connections, including Citadel.

    Citadel reviewed by Enterprise Networking Planet

    Carla Schroder of Enterprise Networking Planet has written a nice two-part review of the Citadel system. In this review she praises Citadel's intuitive user-focused user interface and its easy system administration, going as far as to declare it her favorite groupware and messaging server.

    Microsoft Outlook is now supported!

    We are pleased to announce that Outlook Connector product is now available that allows Microsoft Outlook to seamlessly and effortlessly access many of Citadel's groupware and collaboration functions, including not only email but also server-side calendars and address books, tasks, notes, and more.

    WebCit 6.40 released

    Check out our Flash demo of WebCit 6.40! This new version was released today, and it is an upgrade that introduces many new features. WebCit is the web-based front end to the Citadel system. It now supports numerous AJAX-style features, such as ... [More] the ability to drag and drop messages between rooms (or folders), an improved rich text editor, an improved two-pane message viewer, additional bulletin board options, and a left-side menu bar that can toggle between the main menu and a collapsible roo… [Less]

    WebCit 6.40 released

    Check out our Flash demo of WebCit 6.40! This new version was released today, and it is an upgrade that introduces many new features. WebCit is the web-based front end to the Citadel system. It now supports numerous AJAX-style features, such as ... [More] the ability to drag and drop messages between rooms (or folders), an improved rich text editor, an improved two-pane message viewer, additional bulletin board options, and a left-side menu bar that can toggle between the main menu and a collapsible roo… [Less]

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People who use citadel also use:

KOrganizer (KDE), MySQL, Subversion, Mozilla Firefox


Project Cost

This calculator estimates how much it would cost to hire a team to write this project from scratch. More »
Include
Codebase 146,534
Effort (est.) 37 Person Years
Avg. Salary $ year
$ 2,040,688