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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 ... [More]
The DAViCal CalDAV & CardDAV Server is a server implementation of the CalDAV and CardDAV protocols for storing calendaring (iCalendar format) and addressbook (VCard) resources on a remote shared server. An increasing number of calendar clients support the maintenance of shared remote calendars ... [More]
The Calendar and Contacts Server project is a standards-compliant server implementing the CalDAV and CardDAV protocols. It provides a shared location on the network allowing multiple users to store and edit calendaring and contact information.
Buni is a community of open source software developers and users dedicated to the research and development of communication and collaboration software. Buni offers Meldware Communications Suite with Mail, a Calendar Server, Webmail, and a Secure Administration System.
OpenMapi.org is a set of libraries (for C#, Java PHP and Python) that implement a simple but powerful API to connect to different groupware servers. Additionally we also develop a modular open mapi proxy server that provides common features like logging, load-balancing, etc.