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Real estate mashups tap growing batch of APIs

Number of APIs rises 137% since 2008

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NEW YORK -- APIs, the programming tools for tech developers that can enhance websites and serve as building blocks for creative mashups, are on the rise, their volume erupting from an estimated 105 in 2005 to 2,647 in 2010. And that trend has not been overlooked by the real estate industry, according to Adam DuVander, executive editor for, a site that offers news and resources for APIs and mashups. The site offers a database of about 2,000 open Web APIs (application programming interfaces). Speaking during a tech developers workshop at the Real Estate Connect conference Wednesday, DuVander said there are about 225 real estate mashups, and about 159 of them use the Google Maps API. "Mapping and location are -- what do you know -- big in real estate," he said. Other popular APIs used in real estate mashups are those offered by Zillow, Trulia, Bing Maps, Yahoo Maps and Google Base, he said. EBay was a pioneer when it offered up an open API to th...