Sentinel 5p images

Please , I want to ask about which software Can I use to open Sentinel 5p images and what are the processing steps for this kind of images

The Atmospheric Toolbox can handle Sentinel-5p

What are the steps to use Visan software to handle sentinel 5p data please

I don’t know. I have never used it.
You can ask in their forum: Atmospheric Toolbox - Atmospheric Toolbox users