Sunet Drive/Nextcloud
Sunet Drive is a cloud-based file sharing and storage service that enables collaboration on large amounts of data within and between organisations.
Nextcloud is open source file sync and share software for everyone from individuals using the free Nextcloud server in the privacy of their own home, to large enterprises and service providers supported by Nextcloud Enterprise subscriptions. Nextcloud provides a safe, secure and compliant file sync and share solution on servers you control.