Shelly 1 - brilliant software, flawed hardware
Shelly support group (English Version), Shelly 1 + Not tested yet but it looks really nice!
The Shelly 1 Smart Relay: Is it better than the Sonoff Basic? – The Hook Up
Shelly 2.5 Relay Switch, WiFi Smart Home Automation, Compatible With Alexa & Google Home, iOS Android, No Hub Required, Wireless Light Switch, Smart Appliances, Dual Power Metering, UL Certified: : Tools
Shelly. I love you. I hate you. Shelly Switches. - John's Tech Blog
Shelly 1 Review - Tecnoyfoto - Tu web de electrónica, fotografía y domótica
Shelly 1 - Shelly USA
Shelly Plus 1 - Relay Switch 12V/24V-60V DC / 240VAC WiFi 16A - Android / iOS Botland - Robotic Shop
Shelly One WIFI Switch - Scargill's Tech Blog