Box - Box offers secure content management and collaboration for individuals, teams and businesses, enabling secure file sharing and access to your files online.
Soonr - Soonr is a cloud-based document storing and file sharing system for the small and medium-size businesses.
Nubo - A self-hosted file sharing application in Haskell.
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
e2ee cloud - e2ee-cloud is a open source, self-hosted, end-to-end encryption software.
nFiles - Upload, get URLs to share.