This paper presents comparison of three most popular project management standards belonging to a wider group of models (for example, PMBOK, Prince 2, CMMI, ISO 10006, BS 6079, IPMA Competence Baseline, European Commission Project Cycle Management Guidelines). The author discusses methods of project management according to PMBoK, Prince 2 and ISO 10006, some chosen criteria and fields of knowledge, such as general regulations of standards, project range management, resources management, and processes connected with risk, systems of project quality management.