CalendarServer
CalendarServer is a standards-compliant server implementation of the CalDAV and CardDAV protocols, including iMIP and APNS.
CalendarServer Alternatives
The best CalendarServer alternatives based on verified products, community votes, reviews and other factors.
Latest update:
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/sogo-alternatives
SOGo is groupware server with a focus on scalability and open standards.
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/baikal-alternatives
Cal and CardDAV server
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Visit website
The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder.
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/davical-alternatives
DAViCal is a server for calendar sharing.
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/radicale-alternatives
The Radicale Project is a complete CalDAV (calendar) and CardDAV (contact) server solution.
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/agendav-alternatives
AgenDAV is an Open Source CalDAV Web application.
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/xandikos-alternatives
Lightweight CalDAV/CardDAV server on top of Git.
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/calypso-alternatives
Calypso is primarily a multi-user, multi-channel reservations system with a wide range of customer and technology driven features and functionalities.
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/roundcube-alternatives
Web-based IMAP email client
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/mailreach-co-alternatives
The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder.
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/em-client-alternatives
eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.
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