Is there Shared Phidgets Toolkit that works on Windows 10?
No, the toolkit doesn't appear to be available. I have used official website to search it and there is no section listed with this toolkit. However, if you click the Programming button, you are taken to a page where you can see all the drivers and libraries available for development for different operating systems.
Programming page: http://www.phidgets.com/docs/Programming_Resources
Additionally, you can contact the developers using the following details: http://www.phidgets.com/docs/Contact_Us