With COM Port Splitter you can split one real port into several virtual ports, join real ports into one virtual, and redirect the serial traffic from real port to another real or virtual. You can also share one real serial port among several applications so that they will receive the same data from one serial port simultaneously. You can also join several ports under one name and let applications switch among the free ones.

COM Port Splitter is very good at splitting any hardware COM port into multiple virtual COM ports, so that each of them behaves exactly like the original port and has the same name. All virtual ports receive any data that is received by the original port at the same time. For example, COM Port Splitter can let a single serial device interact with multiple applications at the same time.

Another job COM Port Splitter can do for you is join some real COM ports into one virtual port, which is rather useful when you need some application to handle multiple serial devices simultaneously. All data received by one of the joined COM ports is instantly forwarded to the joining virtual port and to the application, and vice versa.

It is also possible to redirect all serial traffic from a hardware COM port to another COM port (hardware or virtual) with COM Port Splitter, meaning that any data sent to the redirected port is immediately received on the port you redirected it to. You may need this in case you are using some software with very strict serial-port settings and instead of figuring out how to modify those settings you can just redirect the data traffic to it.

Besides, COM Port Splitter is essential for creating complex bundles of real and virtual serial ports and interconnecting them as you wish, therefore enabling data exchange between those ports.