The main purpose of this paper is to compare and discuss the evolution of six important management systems: Japanese Total Quality Control (JTQC), Total Quality Management (TQM), Deming s System of Profound Knowledge, Business Process Reengineering (BPR), Lean Thinking and Six Sigma. Indeed the contribution of this work lies in the concurrent analysis and classification, by the means of a literature review, of the results and critical implementation factors of the six systems. Deming s Plan-Do-Check-Act (PDCA) has been used to classify the findings from the literature review."