Download of SUDT SerialNull 1.7.0.699 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The following version: 1.7 is the most frequently downloaded one by the program users.
This PC software can be installed on Windows XP/7/8/10/11 environment, 32-bit version. The program belongs to System Utilities. SerialNull.exe is the most common filename for this program's installer. We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software. The actual developer of the software is SUDT Studio.
From the developer:
SUDT SerialNull is an advanced configuration utility, which purpose is to emulate RS232 serial ports connected via virtual null-modem cable using Virtual Serial Ports Driver, with SerialNull 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.
You may want to check out more software, such as SUDT SerialTrace, which might be related to SUDT SerialNull.