TOTP two-factor provider
Nextcloud app that allows you to manage your OTP (TOTP/HOTP) codes easily
Advanced OATH two-factor provider: TOTP, HOTP and OCRA
SnappyMail Webmail
Secure password manager for KeePass databases, right inside Nextcloud
A fast, Nextcloud-focused webmail client
Alpha: open and edit KeePass (KDBX) password databases stored in your Nextcloud
Tachyon Webmail