Delaware Thirteen Ltd develops and sells software and communication systems in the networking and communication fields in the United States. The company develops wireless protocol manipulation and communication networking software, which has applications in drone defense, local area and wide area cellular communications and networking, enhanced data bandwidth for various digital communications, cyber security for mobile devices, and RF technology. It develops Mesmer, a counter drone product that detects, identifies, and mitigates hostile and nuisance drones. The company was formerly known as Department 13 International Limited. Delaware Thirteen Ltd was founded in 2010 and is headquartered in Columbia, Maryland.