This document discusses different business models for companies using free and open source software (FOSS). It outlines four main categories of FOSS business models: distribution, service providers, hardware, and retail. For each category, it provides examples of companies and discusses their value propositions, critical success factors, and types of offerings. The document encourages exploring these FOSS-based business models and notes that while there are no royalty fees, there are still options for companies to earn money through various experiments with FOSS.