Hi!
I’m adding new features for the future version 4.1:
-On Screen keyboard:

To avoid using a physical keyboard, recommended when we are using a joystick.
-GUI styles:

Now you can change the emulator interface:
-ZEsarUX : default GUI
-ZXSpectr : of my old previous spectrum emulator, which is now 20 years old!
-ZX80/81
-Z88
-CPC
The last 3 can be easily recognized ;)
You can try downloading the last beta versions:
https://sourceforge.net/projects/zesarux/files/Beta_and_Snapshot_versions/
Or compiling from source code:
https://sourceforge.net/p/zesarux/code/ci/master/tree/
Cheers
Cesar