multi window

AnalogX SimpleServer:Shout, a multi-threaded streaming MP3 server.

A multi-threaded program that can be used to schedule and backup your files.

FoxTerm is a free multi-session terminal emulation application.

A multi-threaded network capable drawing and collaboration program

Turn your single-user MS Word into a multi-user word processor

Jackbeat is a multi-platform audio sequencer, for musicians and sound artists

Cobian Backup is a multi-threaded program ,and backup your files and directories

Zoom Video, Multi-Screen, Rate, support Play (Video, Audio, Image), Searcher....

It's scalable too very high numbers of feeds and can be used in multi-client

BeeNut is a multi-protocol instant messenger for Windows platform.