If you are on Android, you can use Tasker with AutoVoice + SharpTools to control your devices with your voice. It’s not exactly plug-and-play as it does require some configuration, but the instructions are pretty straightforward.
Instructions: Control your home with your voice (Tasker, AutoVoice, SharpTools)
Requirements:
-
Tasker - automation for Android
-
AutoVoice (Pro) - voice recognition for Tasker
-
SharpTools - SmartThings control for Tasker