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 Freemium Citadel Alternatives
Looking for a program that is like Citadel? We have our top picks here. If you need another program that has some of the features of Citadel on your device, read what we recommend in this post.
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
Citadel Reviews
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