The purpose of this paper is to identify differences and similarities between business models and growth modes of Polish online companies. Following statistical segmentation, five companies were selected. The companies, as segment representatives, were the subject of qualitative research (case study). The analysed companies share some similarities (e.g. contribution to customer, breadth of selection) and differences (e.g. content management, co-creation of value with customer). The identified growth mode is based on entering foreign markets after reaching a certain scale on the domestic market.