http://blogs.msdn.com/ukpartner/archive/2007/04/21/structured-search.aspxArdentia Search was an early adopter of Windows Presentation Foundation and enrolled in the UK ISV Early Adopter Program (aka Touchdown). We had the good fortune to work with Ardentia Search throughout the development and migration from Java to .NET 3.en-USCommunityServer 2.1 SP1 (Build: 61025.2)