Below you can watch a couple of videos demonstrating ExtremeTCP performance in comparison to original TCP:

ExtremeTCP Online Demo

This video demonstrates sending 64 Megabytes of data from Microsoft Azure data-center in South Brasil to Microsoft Azure data-center in South-East Asia using TCP and ExtremeTCP. Both source and target systems are running Windows Server 2012 R2.
An access to the online demo (where you can test ExtremeTCP vs TCP performance over various available routes) can be granted by special request. Regretfully we can't open this to everyone access due to a limited resources.

ExtremeTCP on FTP Server

This video demonstrates ExtremeTCP running alongside with Filezilla FTP Server. When ExtremeTCP software is active 16 Megabytes file is downloaded in 11 seconds vs 93 seconds with ordinary TCP.
A good example on how ExtremeTCP can improve the heavy content (large data files, videos and etc..) delivery to end-users.

TCP/IP (Transmission Control Protocol/Internet Protocol) is the basic communication language or protocol of the Internet.