FileZilla Server - Download FileZilla Server 0.9.60.2 for Windows
Google Cloud Filestore - Fully-managed cloud file storage
vsftpd - Very secure FTP Daemon, a secure, fast FTP server for UNIX systems, including Linux.
Azure File Storage - Try Azure File Storage for managed file shares that use standard SMB 3.0 protocol. Share data with on-premises and cloud servers, integrate with apps, and more.
Baby FTP Server - The simplest FTP server to setup. No authentication required.
Igloo Software - Igloo is a modern intranet, it connects people with the information they need to do their best work.