Serial Port Splitter

Serial Port Splitter allows to share dataflow of one COM port between several applications or vice versa to join dataflow of several COM port devices to one application.

Pros: Serial Port Splitter lets several devices to share a single COM port at the same time. Basically the total available bandwidth gets divided into number of independent data streams. Several devices can send in data to the same port too. The application takes care of the multiplexing/ de-multiplexing necessary. It allows to share dataflow of one COM port between several applications or vice versa to join dataflow of several COM port devices to one application. Such program universality is achieved by means of virtual serial ports technologies. Ports thus created can be set to be read/write or read only for split ports and similarly the ports that are combined (joined) can be set to be read/write or write only. One COM port can be split up to 254 virtual ports and can be opened by several applications at the same time and used simultaneously. Once created the set up is maintained even when rebooted maintaining plug & play , hot plug capability, hot program install without requiring reboot etc.

Cons: In this day and age where adding multiple ports of USB costs hardly anything and does provide high speed communications, this kind of application does not add much value; except when for whatever reason this additional hardware cannot be put in.

Overall: A simple application with absolutely simple interface performs stated functionality well. It is rated at 3 stars.

Serial Splitter can split a real port into several virtual ports, join real ports into one virtual, and redirect the serial data from real port to another real or virtual port. It is also possible to share one real serial port among several programs so that they receive the same data from one serial port simultaneously. Also it is possible to join several ports under one name and let programs switch among those that are free at the moment.
Serial Splitter splits real COM port into multiple virtual COM ports is such a way that each of them behaves exactly like the original port and has the same name. All virtual ports receive the same data as the original port simultaneously. In this way Serial Splitter lets a single serial device work with multiple programs at the same time. That's an example, however there are multiple scenarios possible.
With Serial Splitter it is very convenient to join some real COM ports into one virtual. You may get the use out of this when you need an application to work with multiple serial devices at the same moment. All data that comes to one of the joined serial ports is instantly forwarded to the joining virtual port and to the program, and in the opposite direction.
With Serial Splitter you can also redirect all data from a real serial port to another real or virtual serial port, which means that any data sent to the redirected port is instantly sent to and received by the port you redirected it to. If you are using some software with strict serial-port settings this option will be extremely useful and you won't need to figure out how to modify those settings as you can just redirect the data traffic to it.
With Serial Splitter you get the essential tool for creation of complex bundles of real and virtual COM ports therefore enabling flexible data exchange between them.