BIMSens has a fully open .Net API.
You can use it to realise your wildest dreams as long as your wildest dreams do not involve bypassing the need for a license or duplicating feature otherwise locked.
Simply add the library BimSens.Api.dll to your .Net solution and start developing your own connections; Add the library BimSens.Api.Gui.dll to easily embed a BIMSens control to your favourite 3D viewer!
Ok, there is no help or documentation for the API yet… But it is coming.
If you have a specific need, we may be able to extend the API for you, drop us an email.