There are multiple examples already shared throughout this forum. It would be helpful if you could explain exactly what you're trying to do? If simple remote control via a web browser is what you're after, many users have successfully modified their old copies of the SmartTiles App and have gotten it to run on Hubitat.
There is also an integration between SmartThings and Hubitat by @krlaframboise that allows SmartThings to control Hubitat devices.
