Sigma Advanced Systems Limited, formerly Megasoft Limited, is an India-based manufacturer and service provider of defense systems and security solutions. The Company specializes in the design, development, and production of defense and aerospace solutions. Its portfolio includes Avionics, Naval Systems, Torpedo Systems, Communication Systems, Submarine Platform, Radars and Counter-Unmanned Aerial Systems tailored to meet the needs of modern armed forces and homeland security. It supports its clients with end-to-end solutions, from initial concept design through to full-scale production, testing, and deployment. Its services consist of system solutions and engineering; hardware design and development; software design and development, and production. Its product lineup spans hard-kill and soft-kill countermeasures, such as spoofers, interceptors, jammers, and full-spectrum counter-unmanned aerial systems (C-UAS) platforms, engineered to dominate drone threats across land, sea, and sky.