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Clavin seeks to make its mark in open-source world

A new software designed for the defense and intelligence community has an unlikely name in “Clavin.” It’s partly named for the know-it-all postal worker on the long-running TV sitcom “Cheers.”

But what makes Clavin — an acronym for Cartographic Location and Vicinity Indexer — more unusual, its founders and others say, is that it is open-source software. Its source code is available for free so that users can change and customize it.