Sigma Advanced Systems Limited, formerly Megasoft Limited, is a manufacturer and service provider of defense systems and security solutions. It 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 and others. Its services consist of systems solution and engineering; hardware design and development; software design and development, and production. Its products include Missile System, Avionics, Naval System, Radar System, Anti-Drone System, Surveillance UAV And Armed UAV and COTS. Its Indrajaal Partner integrated system platform combines AI sensing, electronic warfare, and command systems into deployable solutions.