Etherstack plc is a holding company. The principal activities of the Company are design, development and deployment of wireless communications software and products. The Company specializes in wireless technology. It develops software for use in transceivers, which enables the transceiver to communicate with a radio network and other transceivers. The Company licenses its software and designs to companies that manufacture telecommunication equipment primarily for government public safety agencies and utilities. The Company operates in the United Kingdom, the United States, Japan and Australia. The Company also provides ongoing warranty and support services to its customers. Its subsidiaries include Etherstack London Limited, Indian Pacific Nederland BV, Etherstack Inc., Etherstack Pty Limited, Auria Wireless Pty Limited, Etherstack Japan Limited and Etherstack Pte Limited. These subsidiaries develop and sell wireless software communications products.