OpenCPN ov50 and 4.99MUI + wxWidgets 3.1.2
This loads and runs in Opencpn. It is Beta.
The ov50 interface is great. It goes from big to small very easily.
At first having a blank menu it is strange,and with a right click to pick new to create an alarm, but the concept is understand quickly.
Everything is quite handy. Editing alarms is a right click away.