Just updated my Bandhelper desktop app and discovered, that it got first OSC support!
In this first release from December 2024 one can define OSC devices and OSC presets to send out when changing a song within Bandhelper.
I’m currently testing, first try was already successful:
You can easily create a /GigPerformer/SwitchToSong message with the song name as an argument and GP reacts 
Bandhelper can now send Songnames to select Songs in a setlist!
Receiving OSC is not available yet. I don’t care, as I currently send only previous and next song so Bandhelper by MIDI over the local Bandhelper MIDI port.
This is a great first step, as one doesn’t need to do MSB, LSB, PC mapping between Bandhelper and GP anymore
Next stop receiving OSC?