This document discusses various project management methodologies. It begins by explaining that project management methodologies are frameworks for initiating, planning, and executing projects. It then provides details on several specific methodologies: Agile software development focuses on iterative development through collaboration between cross-functional teams. Adaptive Project Framework and Crystal methods are agile approaches that emphasize cycles and communication. Extreme programming prioritizes simple processes and short iterative deliveries based on features. PRINCE2 uses a process-based approach, while Critical Chain focuses on resource leveling.