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This is the account of John McMahon, Founder of Extentech Inc.[1] A San Francisco, California-based software company that published the ExtenXLS and open source OpenXLS Java [2]Spreadsheet SDKs and the Sheetster Web Based Spreadsheet. [3]
Founded in 1999, Extentech Inc. published Java Spreadsheet developer tools that allowed Java programmers to add Excel-compatible functionality to their applications.
John sold Extentech Inc. to Infoteria a Tokyo/based public company in 2012, then went on to create Starter Inc, a platform and business services firm.