HDS International Corp. (OTCPK:HDSI) acquired SirenGPS Inc.’s Emergency Management Software Posted on 06/02/2015 by Ron Klammer Posted in Mergers & Acquisitions Tagged Software HDS International Corp. (OTCPK:HDSI) acquired SirenGPS Inc.’s Emergency Management Software, which comprises the emergency management software as a service (SaaS) platform.