If anyone would like to try it, I created an add-on for OpenHab for Bond.
Here’s the jar: https://drive.google.com/open?id=1UuGl9diqNDLfcBShs2N47Nk7oskIUIpL
And the code: https://github.com/SRGDamia1/openhab2-addons/tree/bondhome
It should be able to discover and control any type of device, but it’s only tested on the fans and “generic” devices I have. You do have to set up everything with the Bond app first. It’s using the local HTTP api for discovery and periodic low-frequency polling and the BPUP protocol for immediate events.
Feedback is appreciated!