Maybe https://github.com/tron1991/open-product-management https://github.com/tron1991/open-product-management and https://yilunzh.com/pm/ https://yilunzh.com/pm

Maybe https://github.com/tron1991/open-product-management https://github.com/tron1991/open-product-management and https://yilunzh.com/pm/ https://yilunzh.com/pm/ are useful. At least I think they are :)