High Quality Content by WIKIPEDIA articles! Files2U (F2U) is a proprietary application layer protocol, based on TCP/IP. F2U combines various application layer protocols including HTTP, FTP and SMTP to offer a single system to transfer large files through the internet. F2U protocol is used by an application server called Files2U. The new generation of F2U can also use UDP at the Transport layer. The use of UDP packets overcomes latency issues and packet loss. Forward Error Correction built into the new version of F2U protocol allows for dropped packets or reordering of packets. This makes it extremely useful to transfer large files where network conditions are poor. Files2U is deployed worldwide in various government, military and commercial instances. APIs are available on F2U to develop custom applications or alternatively use Files2U application for web-based file transfers.