BoxCryptor - Boxcryptor encrypts your sensitive files before uploading them to cloud storage services like Dropbox, Google Drive, Microsoft OneDrive, Box, and many others.

CompleteFTP by EnterpriseDT - CompleteFTP is a secure FTPS and SFTP server for Windows.

Cloudfogger - Easy and secure encryption for the cloud. Provides security for all cloud storage services like Dropbox, OneDrive and Google Drive.

SolarWinds Serv-U - SolarWinds Serv-U is a web-based, secure file transfer solution.

Mega - Secure File Storage and collaboration

Progress WS_FTP - Progress WS_FTP is a robust FTP server solution that enables you to keep an eye on transfer details and security, accelerate file transfers, and protect your data with advanced settings and controls.