Not really. At least I don't think so. VCDS is modelled after the dealer VAS software except that VCDS is free and is updated by a third party and runs off a laptop and communicates with the car via OBD2 port. The software isn't open source as only the third party updates it.You are talking about open source software? Ones where you can make your own apps and modify the software yourself?
So for example these are the control modules present in most VW group vehicles and the second screenshot shows the options available in part of one control module. Ticking off boxes allows you to customize the car so to speak for your preferences or world regions etc.
Is there something similar for Jaguar vehicles?