The instrument that I play is a replica of a European Reniassance lute, but some people have lutes that are what I would call an oud. An oud usually does not have frets, and tends to have three soundholes in the soundbard, where a lute will have one. I got some of these sites with a simple web search.

• The charm of the 'ud The Oud, the King of Arabic Musical Instruments
• Viken Nazarian's new web page Viken Nazarian
• Pablo's Oud Page
• The only pure Arabic oudmaker on the web
• Mike's Ouds

thanks to Ronny Andersson