Elsawin is the workshop software VW / Audi use. Service intervals, what to do, when to do it. Workshop manuals. Covers ALL models upto 2007.
ETKA - Actual parts software your local VW / Audi parts dealer uses to locate parts. Full search facility, extensive diagrams of ALL parts. Find a part number of a specific item as well as the price (not 100% accurate but very close, old prices)
£8 delivered to UK £10 rest of world
Also have ETOS will is like ETKA but also covers Seat and Skoda. ETOS is an additional £2.
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