Best null-modem software for free download

The program emulates one or couples of RS-232 serial ports connected via virtual null-modem cable. It is possible to create the unlimited couples of virtual serial ports on a single PC and connect them in any sequence using virtual null-modem cable.
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Use Serial Splitter to split serial ports at one side into multiple virtual and real serial ports at the other one, as well as join multiple serial ports into one. The unique feature of this version is many-to-many ports splitting/redirection.
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Use Serial Port Terminal to connect to remote computer using null-modem, send or receive various types of data over serial line, redirect data into specified file, monitor data exchange between serial devices, troubleshoot modem settings and more.
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Connect an Amiga with one or more PCs, and access Amiga resources (e.g. files, floppy and hard disk images, ROM transfer, etc.) from the Windows desktop. Supports serial and TCP/IP connections, including Bluetooth and Wi-Fi.
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The main purpose of Eltima Serial Port Terminal is to establish connection to serial port and send/receive various types of data down the serial line. Eltima Serial Port Terminal is a session-based, multi-purpose application that provides simple communication interface to connect to any serial port device (modem/fax/GPS/mouse/printer and so on).
Eltima Serial Port Terminal allows you to open as many serial ports as you like (including virtual serial ports); dynamically change serial port settings without necessity to close and reopen current port; adjust baudrate, databits, parity, stop bits, flow control parameters; save all received bytes into a file for later analysis and lots more. Being a session-based, Eltima Serial Port Terminal allows creation of options set and saving them under individual session names for different hosts.
Unlike other terminals you may not only send, but also receive and view data in hexadecimal format, switch between dump and terminal view modes, etc, which could be very useful for debugging and testing serial port connections.
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Eltima Serial Splitter establishes serial connection and implements data transmission between COM-ports and applications, or any kind of serial port devices.When Splitter is used to split only real ports and connects them to other physical serial ports, no virtual ports are created. Virtual serial ports are based on a technology by Eltima and are used to connect several applications to the same COM-port. Splitter creates several virtual copies of a COM-port.Applications refer to corresponding virtual ports (for instance, COM2, COM3), which send data to the real COM1 and to a connected device. Then, all data a real port receives from the device is transferred to the applications via virtual ports. Serial Splitter splits one com port (either real or virtual) into several ones (real or virtual ones), which are exact copies of the original port in the system. For instance, it splits real COM1 into virtual COM2, COM3, COM4 ports. To create a pure virtual ports pair you might also try VSPD XP. Here's a real-life example: A sale on a cash register is made. The cash register sends text via a serial port (COM1) to a computer. The software on the receiving computer takes the text from the serial port, and prints some of it to a video file. Using Serial Splitter one-to-many ports splitting, this information can be viewed from several computers or applications. Eltima Serial Splitter joins any number of COM ports into one serial port, allowing information from several devices to be received by a single application connected to the port at the OUT side of the bundle. For example: 100 websites are hosted on 100 computers. Via null modem a certain data is delivered from these computers to a PC with a microcontroller. On this PC Eltima Serial Splitter joins com-ports and sends all dataflow to a one virtual serial port. Single application receives and represents all information about the status of a 100 server hosts simultaneously.
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Serial to Ethernet Connector is an advanced software solution developed to share serial port devices over TCP/IP network. Thus, any serial port device connected to COM port at local PC could be accessed from anywhere in the world via internet, for example. When the attached serial port device sends communication data it will be actually transmitted over TCP/IP network. Such behavior is achieved due to the use of virtual serial port technology which emulates standard COM ports. In that case Windows OS treats virtual serial ports in the same way as real ones therefore you are no longer limited to just two real ports (any number of physical ports you have) per system and may create COM port connections without occupying any real serial port. Formerly known as VSPD.Net, Serial to Ethernet Connector has a completely new interface and greatly revamped engine. It allows you to use three different types to connect to remote computer. The first type is port-to-port connection, which lets you connect two computers through TCP/IP network. In this way you can emulate virtual null-modem cable connection. Serial to Ethernet Connector allows you to customize remote serial port settings locally or dynamically fetch these settings from the remote end. Second type is the port-to-TCP client, which allows you to connect to remote server and send/receive communication serial data over TCP/IP network. Once connection is established, all data sent from remote serial port device, attached to the server, will be genuinely delivered to local serial port where it can be further processed. The last type is the port-to-TCP server which allows you establish multiple connections to local serial port device and redistribute COM port device data all over the world. Server listens to all incoming connections at the defined TCP port and redirects input/output serial data to TCP/IP network. Serial to Ethernet Connector can be easily configured for current demands.
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VSPD Mobile Phone Edition is a brand-new generation of already popular driver for mobile devices released by Eltima more than a year ago. Now we bring a totally new level of serial emulation for SmartPhones based on Windows Mobile platform! VSPD Mobile Phone Edition is capable of creating up to 20 pure virtual serial ports in your mobile system, this results in up to 10 virtual serial ports pairs available for testing and integration. Two ports in a pair are connected via a virtual null-modem cable and fully emulate real serial ports that may or may not be present in your device. You can select any port numbers (between 0 and 9) for virtual serial port pair as well as decide whether to use COM or VSP prefix. For example, you can create virtual pair COM5-COM6 (or VSP0-VSP9). In this case all data sent by other applications to virtual serial port COM5 (VSP0) will be received at virtual serial port COM6 (VSP9), and all data sent to virtual serial port COM6 will be received at virtual serial port COM5 (VSP0). This can be seen if you run two terminals connected to both sides of the virtual serial ports pair. Everything typed in the first terminal will appear at the second one. Virtual serial ports pair can be used to transfer files, other data and do anything as if there are additional real serial ports in your smartphone. With Virtual Serial Ports Driver Mobile you can connect one application to another using virtual serial ports pair. Applications will be able to exchange data. This solution can be used, for example, for GPS simulation software.
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Advanced Virtual COM Port is the first software of its kind which includes both local and network
virtual COM port functions.

It can share your real COM ports or it can create virtual COM ports and connect them with a
virtual null-modem cable locally or through a TCP/IP network or the Internet.

You can connect to a shared port and use it just like it is on your machine. Virtual serial ports
created by the program look and work the same way as real ones look and work.

Main features:
- Virtual COM Ports appear to the system and applications like real ones
- Virtual COM Ports work like real ones
- 64-Bit compatible (AMD64)
- Hot Virtual COM Port creation and removal (no need to reboot the computer)
- Once created, Virtual COM Ports persist in the system until you remove them
- No need to have physical serial ports (except for the physical ports sharing function)
- Higher data transfer rate than on hardware serial ports
- Up to 255 Virtual COM Ports can be created
- PnP, WMI support
- Flow control emulation supported
- Easy port state monitoring
- Ability to temporarily remove all ports without losing their configuration
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Virtual Serial Ports Driver CE creates up to 20 pure virtual serial ports in your mobile system, this results in up to 10 virtual serial ports pairs. Each pair has 2 ports that are virtually connected to each other. For other applications, virtual serial ports will be seen exactly as two real serial ports connected via virtual null-modem cable. You can select any port numbers for virtual serial port pair as well as change their names from COM to VSP. For example, you can create virtual pair COM5-COM6 (or VSP0-VSP9). In this case all data sent by other applications to virtual serial port COM5 (VSP0) will arrive at virtual serial port COM6 (VSP9), and all data sent to virtual serial port COM6 will arrive at virtual serial port COM5 (VSP0). This can be seen if you run two terminal programs available for your OS and connect one of them to virtual serial port COM5 and other one to COM6. Then, all you type in first terminal will appear at second one. Of course, you can transfer files, other data or do whatever you want as if there are more real serial ports in your embedded device. With Virtual Serial Port Driver CE you can connect one application to another using virtual serial ports pair. Applications will be able to exchange data. This solution can be used, for example, for GPS simulation programs.
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Virtual Serial Ports Driver XP is an advanced configuration utility, which purpose is to emulate RS232 serial ports connected via virtual null-modem cable using Virtual Serial Ports Driver, which can be easily included in your own software providing simple and robust way to create and configure virtual serial ports directly from your application (if you purchase OEM version only). In other words, with VSPD XP you can create any number of pure virtual serial ports in your system connected into pairs via virtual null-modem cable without having real serial ports occupied. Virtual Serial Ports appear to operating system or any Windows application as "standard" hardware serial ports. Virtual serial ports created by VSPD XP work exactly the same as real ports in your system managing all signal lines and emulating baud rate. Of course, you can transfer files, other data or do whatever you want as they were real serial ports. For instance, using Virtual Serial Ports Driver you can create two virtual serial ports: COM5 and COM6 and connect two different applications to them. Everything that the first application sends to COM5 will be received by the second application at COM6, and all data sent to COM6 by the second application will be received by the first one at COM5. "Hot" installation - no reboot required after installation, creation or reconfiguration of virtual serial ports.
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