EXHIBIT 21.1 SUBSIDIARIES OF REALNETWORKS, INC. Entity Jurisdiction - ------ ------------ RealNetworks, Ltd. United Kingdom RealNetworks K.K. Japan RealNetworks, SARL France RealNetworks GmbH Germany RealNetworks Australia Pty. Limited Australia RealNetworks of Brazil LtDA Brazil RealNetworks Hong Kong, Limited Hong Kong RealNetworks of Mexico, Inc. Mexico RealNetworks Singapore Pte Limited Singapore RealNetworks Korea, Ltd. South Korea RealNetworks E-Commerce LLC Delaware RealNetworks Investments LLC Delaware Aegisoft Corp. Delaware NetZip, Inc. Georgia Xing Technology Corporation California