Surtr Defense Systems is building the open operating system for counter-UAS. Today's defense ecosystem is fragmented. Sensors, effectors and software platforms are often built to operate in isolation, creating unnecessary complexity for operators in the field. ParallaxOS changes that. It connects existing systems into a single operating picture, making it easier to integrate new capabilities, share data and respond to evolving threats. Founded by former engineers from Anduril and Shield AI, Surtr is focused on one thing: building software that makes defense systems work better together. We believe the future of defense belongs to open architectures, rapid integration and interoperable systems. Building defense technology to unite the West.