Hardware Startups

Rebellion Defense builds RBLN-OS, an "intelligence shield" for critical infrastructure that combines radar sensors, AI data fusion, and operational software to detect, predict, and respond to airspace and maritime threats. Its products, including Argus sensor arrays and Prism track-fusion modules, provide situational awareness and command-and-control of defensive effectors.

5 investors

Red Balloon Security develops host-based runtime defense solutions for devices in critical infrastructure environments. The company serves government agencies and Fortune 500 enterprises in aerospace, automotive, telecommunications, and other critical sectors.

5 investors

ReOrbit designs and manufactures advanced LEO and GEO satellites for connectivity, communication, and orbital intelligence, serving military, civil, and national security customers globally. The company offers software-defined, modular satellite systems that enable secure communications, data processing in orbit, and inter-satellite connectivity with strategic autonomy.

5 investors

Replenish built a self-cleaning blender appliance that prepares smoothies and snacks in under a minute. The consumer hardware product targeted health and wellness in the food and beverage category.

5 investors

Resonado is a hardware design and engineering lab focused on improving the acoustic performance of audio products. It develops technology for the next generation of audio hardware.

5 investors

Roam Robotics builds a modular, air-powered exoskeleton system that augments human strength and endurance, using lightweight actuators and a robotic knee brace to add power while reducing exertion, pain, and injury risk. The dual-use platform is ruggedized for military use and also being tested to reduce pain and improve mobility for patients with advanced knee osteoarthritis.

5 investors

RoboTire builds robotic, fully-integrated containers that automate vehicle tire changing, performing a tire change in about 10 minutes, with plans to expand to other maintenance such as brakes, oil, and batteries. It targets both personal vehicle owners and fleet operators, deploying units inside existing shops, retail parking lots, and remote fleet service areas.

5 investors

ROLI designs color-based music instruments and tools that change how people interact with sound, aiming to make music-making more accessible to music lovers and creators. Its product ecosystem targets musicians across all skill levels.

5 investors

Rondo manufactures thermal battery systems that store energy by heating refractory bricks with renewable electricity and release it as continuous industrial heat and power for manufacturing processes. The company serves cement, chemical, food and beverage, fuel, and textile producers seeking to decarbonize heat-intensive operations.

5 investors

RunAnywhere is a research-first inference lab that hand-writes GPU kernels and develops SDKs to accelerate large language model inference on consumer silicon, particularly Apple devices. The company provides inference runtime software and open-source tools for developers deploying AI models on mobile and edge devices.

5 investors

Stream is a private voice recording device that enables universal speech-to-text dictation across any application on iOS and Mac, designed as a wearable "inner dialogue" tool for capturing thoughts and ideas on the fly.

5 investors

Seaflight develops autonomous electric drones and aircraft with advanced aerodynamic technology for cargo logistics and defense applications. The company specializes in ground effect uncrewed systems, active aerodynamic flow control, and autonomous flight systems for extended range and payload capacity.

5 investors

Seismic makes powered clothing that fuses apparel with robotics, using Flex-Drive electric muscles to provide core and hip support that reduces muscle strain and fatigue. Its products target worker safety (an over-the-clothes vest for jobs involving awkward postures) and wellness/mobility (supporting sit-to-stand movement and lumbar support for aging users).

5 investors

SendCutSend provides on-demand laser cutting, CNC machining, and finishing services for custom metal parts, serving makers, small businesses, and large enterprises across the United States. The company emphasizes fast turnaround, low costs, and no minimum order requirements for prototype and production runs.

5 investors

Shapr3D is a 3D CAD software for designing 3D models across Mac, iPad, Windows, and Vision Pro devices. It serves solo designers, small businesses, and enterprises working in product design, industrial design, manufacturing, and woodworking.

5 investors

Sharper Sense develops single-use neurostimulation patches worn on the neck to enhance cognition and sensory processing by stimulating nerves and releasing norepinephrine. The product targets military personnel, first responders, shift workers, students, and older adults seeking improved clarity and reduced fatigue-related errors.

5 investors

ShotTracker builds real-time data and AI-driven analytics technology for basketball, using sensor hardware to capture game data. Its tools serve coaches, players, executives, referees, and rights holders for scouting and fan engagement.

5 investors

Signaloid develops UxHw technology, a compute platform that propagates uncertainty by evaluating a distribution of inputs in a single program execution to produce distribution-based results. It targets stochastic workloads in quantitative finance, AI/ML, robotics, industrial automation, supply chain, and engineering, claiming large speedups over conventional Monte Carlo methods.

5 investors

Silicon Box develops chiplet architecture and semiconductor technologies for advancing frontier technologies. The company combines expertise in front-end chiplet design, back-end semiconductor manufacturing, and ecosystem development.

5 investors

Silveray develops flexible X-ray detectors using patented semiconductor ink technology for non-destructive testing in industrial applications including oil and gas, nuclear energy, aerospace, and shipbuilding. The company's Digital X-ray Film product enables imaging in constrained spaces where conventional rigid detectors cannot be deployed.

5 investors

Sinumy develops hands-free authentication technology, described as a first-of-its-kind in Japan and globally. The company builds this deeptech recognition/authentication technology and pursues partnerships and new business ventures around it.

5 investors

Skullcandy makes consumer audio hardware including earbuds, headphones, and speakers, some featuring bass enhancement, active noise canceling, and gaming headsets. Its website offers a product guide to help shoppers pick a device based on listening habits and preferences.

5 investors

Sky Spy develops signals intelligence (SIGINT) technology for real-time RF tracking in contested electromagnetic environments on the battlefield. Built by combat veterans and engineers, its system is designed for military and defense use and was developed and tested using data from active combat zones in Ukraine.

5 investors

Skycore Semiconductors designs switched-capacitor power converter technology, with the Skycore 300 W evaluation kit demonstrating high-efficiency DC-DC conversion for applications requiring compact design and power density.

5 investors