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Roundcube

Roundcube is the webmail application that Kolab uses and actively develops. In addition to webmail it provides comprehensive groupware functionality, through a variety of plugins.

graph TD
    HTTPD --> Roundcube
    Roundcube --> |Mail over IMAP|IMAP[Cyrus IMAP]
    Roundcube --> |Contacts over CardDAV|IMAP[Cyrus IMAP]
    Roundcube --> |Calendars over CalDAV|IMAP[Cyrus IMAP]
    Roundcube --> |Send emails|Postfix
    Roundcube --> |Syncronization state|Mariadb
    Roundcube --> |Caching|Redis

Syncroton

Syncroton is an implementation of the ActiveSync protocol, based on the Roundcube framework. It allows devices to synchronize Email, Tasks, Calendars and Contacts stored in Cyrus-IMAP via 

graph TD
    HTTPD --> Syncroton
    Syncroton --> |Mail over IMAP|IMAP[Cyrus IMAP]
    Syncroton --> |Contacts over CardDAV|IMAP[Cyrus IMAP]
    Syncroton --> |Calendars over CalDAV|IMAP[Cyrus IMAP]
    Syncroton --> |Send emails|Postfix
    Syncroton --> |Syncronization state|Mariadb
    Syncroton --> |Caching|Redis

Chwala