. . "Extentech Inc."@en . . . . . . "Sheetster is a GPL Open Source Web Spreadsheet and a Java Application Server created by Extentech Inc. The product was created for the enterprise and small and medium sized businesses as an Open Source alternative to closed document management systems."@en . "1.0" . "2009-10-27Z"^^ . "Sheetster Version 1.4" .