On Purpose is an initiative to support founders of start-up companies in the field of green, social and sustainable entrepreneurship. Activities are centered around the On Purpose business plan competition for start-ups. Expert advisers are supporting the initiative by acting as coaches, peer reviewers or general experts for the start-up businesses. The spectrum of these network partners covers all areas being essential for entrepreneurs to establish their new company. The exchange of information with these experienced professionals helps to highlight and address potential problems already at an early stage. Moreover, the early interaction is beneficial for both: future entrepreneurs get easy access to economic and legal information whilst the network partners get to know the newest trends in the field. The business plan competition encourages future entrepreneurs to bring forward their ideas in the field of green, social and sustainable entrepreneurship. It supports the development of an idea into a business plan, whilst providing a platform which helps to incorporate start-up companies.