ARLINGTON, Va., Feb. 4 -- Arlington-based software vendor Group Logic, Inc. announced today that it achieved a 60% growth in sales of its MassTransit and ExtremeZ-IP software products during 2003. Growth of both products was driven by continued widespread customer adoption as well as the release of major version upgrades. Group Logic's MassTransit now powers production workflows at 12 of the top 15 printers in North America as well as major publishers and Fortune 500 print purchasing and creative organizations. ExtremeZ-IP leads the market as the only fully compatible solution for file and print sharing between Mac OS X desktops and Windows servers. During 2003, Group Logic grew its staff by 35% to support the growing demand and ongoing development needs of its products. In addition, the company recently announced its financial participation in Microsoft's $60 million settlement of a patent infringement lawsuit relating to a patent originally awarded to Group Logic. "Based on our momentum going into 2004, we anticipate continued strong revenue growth in the coming year. We are significantly increasing investment in all areas of the company to take advantage of the expanding market adoption of our products, leveraging our excellent financial position resulting from the Microsoft settlement," said Group Logic President T. Reid Lewis.