There are many alternatives to CuteCom for Linux and since it's discontinued a lot of people are looking for a replacement. The best Linux alternative is dterm (terminal emulator), which is both free and Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to CuteCom and nine of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to CuteCom are minicom (Free, Open Source), HTerm (Free), picocom (Free, Open Source) and GtkTerm (Free, Open Source).
moserial is a clean, friendly gtk-based serial terminal for the GNOME desktop. It is primarily intended for technical users and hardware hackers who need to communicate with embedded systems, test equipment, and serial consoles.
The idea is to create a simple and good looking terminal for being able to transmit to and from electronic boards and hardware. It can be configured to show data in hex or string format. It allows manual configuration of the port to use.