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
TaiwanSynology is a Taiwanese company founded in 2000 that specializes in network attached storage, backup appliances and surveillance recorders. Its DiskStation Manager (DSM) operating system is the most established in the category, covering Btrfs snapshots, cloud sync, and a Surveillance Station package that turns a NAS into a local network video recorder for IP cameras. Models with Intel or AMD processors run Container Manager, which is the usual way people self-host Home Assistant and similar services at home.
View SynologyEvery product, compared
Switch between each brand's full lineup, tap any product for specs, compatibility and pricing.
NASSynologyDS124
7% OFF$149.99$138.99
NASSynologyDS1525+
$897.25
NASSynologyDS1823xs+
$2049.99
NASSynologyDS1825+
$1249.99
NASSynologyDS223
6% OFF$304.99$285.99
NASSynologyDS223j
$209.99
NASSynologyDS225+
$364.99
NASSynologyDS2422+
$1999.99
NASSynologyDS3622xs+
$3449.99
NASSynologyDS423
$399.99
NASSynologyDS425+
$599.99
NASSynologyDS725+
$547.11
NASSynologyDS925+
$705.83