free FTPd

Another lightweight and basic free SFTP server. It is easy to set up and simple to run, and gives you a chance to get a protected record move server going in only a few minutes. freeFTPd bolsters SFTP, FTPS and in addition its non-secure cousin, FTP, and gives you a chance to exchange documents safely while expending next to no framework assets. 

CompleteFTP 

CompleteFTP is a Windows SFTP server supporting secure document exchange by means of FTP, FTPS, SFTP, HTTP, HTTPS and SCP. Highlights incorporate help for all FTPS and SFTP customers, web record administrator, remote organization, virtual document framework, record sharing, IP sifting, auto-restricting, email notices, process activating, stack adjusting/bomb over, Windows and Active Directory clients, custom confirmation and custom record frameworks through .NET and inserted Javascript, and normal security refreshes. 

CompleteFTP has four releases, beginning with the Free Edition, which, as the name infers, is totally free for a boundless time. It has no restrictions on the quantity of clients, exchanges or whatever else, and the list of capabilities pretty much matches that of FileZilla Server. CompleteFTP scales from the most modest side interest establishment to the biggest corporate bunch with an expansion three paid versions offering numerous more highlights.