I'm getting ETKA. There's also sources online for it. I cannot comment on where those are genuine or not as I don't know.

Has anyone used this? does it give all the part numbers if you just simply type in your chassis number? it sounds very cool if it can do that?

Since its only used in VAG dealers and official versions costs many 000's of pounds and come with a dongle then any copy purchased online is dodgy.

The chassis number entry used to work, but its now a closed internal system on the VAG network so chassis lookups now fail. You can however be quiet exact in searching out parts.

You biggest issue is going to be getting updates, they are released weekly and if the etka you have is old then expect many painfull hours downloading to get to a version you can actually use to get parts.

Vagcat website is good enough for most purposes.