Tellstick Znet Lite local is a web client that let you control your Tellstick devices locally, without an internet connection.
Demo page: https://ropaolle.github.io/tellstick-znet-lite-local/
Tellstick is an IOT gateway that I use to control the lights in my apartment. It can be controlled by Tellstick's mobile/web client thru the service Tellstick Live. Unfortunately it won't work if my internet connection is down. To make sure I can handle my lights independent on internal I maid a local client (Tellstick Znet Lite Local Client) and a proxy/api (Tellstick Znet Lite Local Proxy/Api) that talks to the Tellstick.