Name: FileZilla

Platform: Windows, Mac, Linux
FileZilla Server is only available for Windows

Download Link: filezilla-project.org

Description:
FileZilla is a reliable FTP, FTPS, SFTP client for Windows Mac and Linux. FileZilla has support for IPv6, resume, transfer for files larger than 4GB, bookmarks, drag and drop, filename filters, remote file editing, and configurable transfer speed limits. There is a FileZilla server available for free download at the same website. The server only works for Windows.