This document compares and contrasts features of Mac OS X and Windows 7 operating systems. It discusses programming languages like Java and ActionScript that work on both, as well as .NET Framework and MSDN that are specific to Windows. Key features of Mac OS X mentioned include the Dock, Dashboard, Expose, Cover Flow, and widgets. Windows 7 features discussed include the Start menu, taskbar, and Sensor & Location Platform. The document suggests using virtualization software like VHD to run Mac OS X on Windows 7 and Intel-based PCs.