I love Purism with that stance. There are a handful of other companies that I consider "sustainable businesses", based on proper ethics and values and following

I love Purism with that stance. There are a handful of other companies that I consider "sustainable businesses", based on proper ethics and values and following humane practices. They are hard to come by, and often struggle to get enough revenue. I would like to do ever more biz with these type of companies, prefer and consume their products to the other BS. Where can I find lists, directories and such that keep track of these sustainable businesses? Any good resources around?