mail client integration Nextcloud has integration with a number of mail clients which (automatically or manually) uploads attachments to Nextcloud and inserts a link in the email.
collabora Support on configuring and using the Collabora Nextcloud Integration. For installation questions, use the install category.
talk (spreedme) It seems Spreed.ME deserves its own section! In this category you can ask questions and discuss integration in Nextcloud.
appliances (Docker, Snappy, VM, NCP) This sub-category covers all questions related to the official appliances

About the support category [support] (1)
File uploads >64k fail on LXD container [support] (3)
Where do i set max file upload [support] (2)
Group folders showing as numbers [support] (2)
Nextcloud.log file in race condition - NextCloud [support] (2)
SPDyn updater not working? [appliances (Docker, Snappy, VM, NCP)] (1)
Nextcloud Activity Log location [support] (3)
Error opening file with collabora [collabora] (5)
Nextcloud is inaccessible after synchronization with a computer [support] (2)
Data directory suddenly missing [support] (2)
IO Error when enabling https for Nextcloud with Let's Encrypt [appliances (Docker, Snappy, VM, NCP)] (6)
How can I list all users of re-shared folders? [support] (1)
Migrate from ownCloud to Nextcloud: files_ldap_home? [support] (2)
Uploading File Cancels After Navigating Away From Page [support] (6)
Tagging with custom tags [support] (1)
LDAPS and Active Directory [support] (1)
File Sync new files [support] (1)
The user can not access the admins section [support] (1)
Webdav login issue in files web client [support] (6)
NextCloudPlus not yet initialized, trying again in a few seconds ( 2 ) [appliances (Docker, Snappy, VM, NCP)] (35)
Gallery: how to select images? [support] (1)
Versioning doesn't work [support] (19)
NextCloudPlus not yet initialized, trying again in a few seconds … [appliances (Docker, Snappy, VM, NCP)] (1)
Cant start nextcloud client from ubuntu launcher [support] (1)
Need help configuring dnsmasq [appliances (Docker, Snappy, VM, NCP)] (17)
Share link with password -> error "Access forbidden CSRF check failed" [support] (3)
After restore our server nextcloud deleted some local files from our users [support] (3)
Problem downloading files from Nextcloud [support] (3)
Cannot insert/edit pictures in documents [collabora] (2)
Encrypt data directory with LUKS [support] (6)