IoT GUI and integration to DIY IOT controlling

[LeandroGrismino]

I've spent a lot of time looking for some way to control my smart home devices by the computer, and with this application I see an opportunity to achieve that.
I'm a programmer with little experience, so here are the ideas:
-Implement a widget or an option in the wizard, which allows the control of smart home devices in a more practical way, something similar to the Google Home app.
-Implement a library, or some other way to send commands to devices connected to google(even if you use typed "voice" commands ), from external codes, for example, to enable a person to make a detailed synchronization of several lighting devices of different brands. An application of this would be to implement the feature of ambient light, with devices that do not have this feature natively, or without having to purchase new devices to perform the integration. I already have a base code for capturing color on the screen, but I couldn't find a method for a local program to send the commands to my devices (a smart lamp of a small brand), via Alexa or Google Home.

*sorry for my english, which is not so good, so i used google translator to guarantee it.