The xBIM Tookit (eXtensible Building Information Modelling) is an open-source, software development BIM toolkit that supports the BuildingSmart Data Model (aka the Industry Foundation Classes IFC).
This application uses the features of the toolkit to generate COBie (in different formats) from BIM files.
https://github.com/CBenghi/Xbim.COBieLiteUK.WpfClient.git is its temporary home, with a plan to move it to Xbim.Exchange once working.