ThailandAirGradient 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.
View AirGradient
USASonos is a US audio company known for its multi-room wireless speakers and soundbars that sync music throughout the home. Its speakers support major streaming services, voice assistants and AirPlay, and are controlled through the Sonos app. While focused on sound, Sonos integrates with smart home platforms for voice control and is a benchmark brand for whole-home audio.
View SonosEvery product, compared
Switch between each brand's full lineup, tap any product for specs, compatibility and pricing.
