I believe Sage 200 is a European product offered by Sage in the UK. I don't believe it is anything like Sage 100, 300 or 500, nor is it anything like MAS 90, MAS 200, Accpac, Sage Pro, Sage Master Builder, MAS 500, etc. What is even more confusing is that Sage 100 in the US was part of the products managed by the Sage 200 Product Manager in the UK. Clear as mud, right?