As most of our students and users know, we promote MINITAB and their products but BPI software have SPC by using the Excel Software that has an affordable price.
I also found Bill McNeese very helpful while the information posted on their website can be found in our courses since the examples are easy to understand. bill@spcforexcel.com
https://www.spcforexcel.com/ordering-information
https://www.spcforexcel.com/home
