Microsoft downloads are fully supported with future updates, bug fixes and customer support. Community downloads are submitted by IIS community members and do not benefit from Microsoft approval or support, and should be downloaded with this in mind.
AlexFTPS provides a free FTP/FTPS client and class library available on any platform supporting the .Net Framework 2.0 or Mono 2.0 . This project was started to support the FTPS features of FTP for IIS 7.0 Implemented RFCs: 959, 2228, 2389, 2428, 2640, 3659, 4217 FTPS (sometimes called FTPES) is implemented as described in the RFC 4217 and RFC 2228 documents. https://www.ietf.org/rfc/rfc4217.txt