Comparing Sizes Between Brands.

With so many brands available these days and some of them not always following the Filofax size naming conventions, I often see questions like 'Is X the same as Y?' Or 'What size inserts fit an A size made by B?'

The table below is far from complete, the list just keeps expanding. 

Please feel free to suggest additions to the table and I will add them and republish the table and try to keep it up to date.