Box - Box offers secure content management and collaboration for individuals, teams and businesses, enabling secure file sharing and access to your files online.

e2ee cloud - e2ee-cloud is a open source, self-hosted, end-to-end encryption software.

Filecamp - Digital Asset Management & Online Proofing tools beautifully integrated, into one secure and cost-effective solution. Manage all your digital marketing assets from your own good-looking, easy-to-use spot in the cloud. Unlimited users in all plans!

Nubo - A self-hosted file sharing application in Haskell.

Soonr - Soonr is a cloud-based document storing and file sharing system for the small and medium-size businesses.

4sync - A wonderful application that links all of your computers and mobile devices together. Easiest way to back up and sync your files online. Cross platform file management in the cloud