A family of products is a group of related products that are built by the same company. These products share a similar foundation, but offer different features to meet slightly different needs.
If a product is branded differently depending on the market it addresses, but there is no other difference (e.g. code, functionalities), then this is considered one product.
A Froala Editor license can be used in a single product. A family of products is not considered a single product and a license is required for each product.