Box - Box offers secure content management and collaboration for individuals, teams and businesses, enabling secure file sharing and access to your files online.
Virtru - Virtru is your data privacy force field, wrapping and protecting emails and files wherever they're shared. Easy-to-use data security software for business. People also askIs Virtru Hipaa compliant?
Nubo - A self-hosted file sharing application in Haskell.
Paubox - Paubox provides HIPAA compliant email encryption without the hassle of extra steps.
Backblaze for Business - Manage Backblaze computer backup & B2 cloud storage
Encyro - Use Encyro to send sensitive messages and files to your customers and service providers, including accountants, loan officers, health coaches, and others. Stay organized and forward documents from your mobile device.