This document compares and contrasts the capabilities of three leading business intelligence (BI) and analytics tools: Tableau, Qlik, and Microsoft Power BI. It examines their data acquisition and connectivity, analytics capabilities, visualization features, third-party integration options, and product families. The conclusion is that while Tableau focuses on easy drag-and-drop self-service BI, Power BI has advantages due to Microsoft's resources and its integration of R and D3.js for advanced analytics and visualization.