Citrix ShareFile

Citrix ShareFile is a secure file transfer and sync service designed for businesses that need to exchange large files with clients and partners compliantly. It features client portals, built-in e-signatures, customizable workflows, and detailed tracking. Security includes encryption, data storage zone choices, and compliance with HIPAA, GDPR, etc. It targets professional services like accounting, legal, and healthcare.

Its strength is in creating secure, branded client collaboration spaces rather than general employee file sync, making it a specialized but powerful tool for secure business-to-client communication.