Groupware Nextcloud Groupware is a bundle of apps which is consisting of an Mail-client (IMAP/POP3) and a Calendar and Contacts server (CalDAV/CardDAV) with the respective web interfaces. We complete those productivity tools with Deck, a project management tool which allows you to create Kanban-style task boards and share them with your team. You can find out more about Nextcloud Groupware on our website. Using the Contacts app Using the Calendar app Synchronizing with Android Synchronizing with iOS Synchronizing with macOS Synchronizing with Thunderbird Synchronizing with KDE Kontact Synchronizing with the GNOME desktop Synchronizing with Windows 10