AirGradient builds open-source indoor and outdoor air quality monitors that track PM2.5, CO2, temperature, humidity and other pollutants. The company is known for its open hardware and firmware, letting users build, repair and integrate the monitors with platforms like Home Assistant and its own dashboard. AirGradient appeals to people who want transparent, data-driven air quality monitoring rather than a closed black box.
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Dreame makes smart home cleaning devices, best known for its robot vacuums and mops with strong suction, LiDAR navigation and self-emptying, self-washing docks. Its lineup also includes cordless stick vacuums, wet/dry vacuums, robotic mowers and pool cleaners, plus hair care products. Devices are managed through the Dreamehome app and integrate with Alexa and Google Home.
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