Citadel Alternatives
Citadel
Is a collaboration suite (messaging and groupware). It is designed to run on open source operating systems such as Linux or BSD. In order to modernize the Citadel platform for the Internet, the Citadel/UX developers added functionality such as shared calendars, instant messaging, and built-in implementations of Internet protocols such as SMTP, IMAP, Sieve, POP3, GroupDAV and XMPP. All protocols offer OpenSSL encryption for additional security.
Users of Citadel/UX systems also have available to them a web-based user interface which employs Ajax style functionality to allow application-like interaction with the system.
Citadel uses the Berkeley DB database for all of its data stores, including the message base.
Best Citadel Alternatives for Web
Are you looking for alternatives to Citadel? Please see our top picks. In this article, we provide the list of some Citadel alternatives that will work on Windows and other platforms.
Kolab Community
FreemiumOpen SourceLinuxWebSelf-HostedKolab Groupware is a secure, scalable, reliable, flexible, full-featured collaboration suite.
Features:
- CalDAV
- CardDAV
- Real time collaboration
- Support for WebDAV
Zimbra Collaboration Suite
FreemiumOpen SourceLinuxWebSelf-HostedZimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more. With the most innovative web application available today, Zimbra...
Features:
- Active Directory integration
- ActiveSync
- Email Server
- Real time collaboration
- Team Collaboration
Microsoft Exchange Server
CommercialWindowsWebIntelligent inbox and calendar software that's a part of the Microsoft Office Suite.
Features:
- Email Server
- Real time collaboration
Zarafa
CommercialMacWindowsLinuxWebOpen Source Collaboration, providing integration with your existing Linux mailserver, native mobile phone support, Outlook "Look & Feel" webaccess and...
Features:
- Email Server
- Real time collaboration
OX Open-Xchange
FreeOpen SourceLinuxWebSelf-HostedOpen-Xchange Server 6 is the most advanced Linux based Groupware solution f. Open-Xchange Server 6 is superior in the following areas: • Open-Xchange Server 6 offers...
Features:
- Calendar integration
- German
- Group Mail
- Email Server
- Real time collaboration
- Support for WebDAV
Atmail Email Server
CommercialLinuxWebAtmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows. Features: Webmail Calendar Addressbook ...
Features:
- File sharing
- File-sync
- Group Mail
- Email Server
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