gtkterm

It is a "clone" of the famous Hyperterminal

Gtkterm is a simple GTK+ terminal used to communicate with a serial port. It is has fewer features than minicom, but is designed to be as easy to use as possible. Gtkterm was originally written by Julien Schmitt as a convenient program to communicate with serial devices. It is targeted mainly at developers working with embedded devices, but is useful for anybody who needs to quickly and easily set up serial communication. Gtkterm is maintained and hosted here on fedorahosted.org

There is no official package available for openSUSE Leap 15.3

Distributions

openSUSE Tumbleweed

openSUSE Leap 15.3

openSUSE Leap 15.2

Unsupported distributions

The following distributions are not officially supported. Use these packages at your own risk.