Feature Comparison for Windows 95, Windows 3.1, Windows for Workgroups, and OS/2 Warp See how these operating systems compare in such areas as ease of use, communications, and performance. Windows 3.1 vs. Windows 95: Quantification of Learning Time and Productivity An independent study that looks at the speed and productivity of users upgrading from Windows 3.1 to Windows 95. Windows 95 and NT Workstation: How to choose the right mix for you, now and in the future The strategy behind Microsoft's 2 desktop operating systems, with detailed charts outlining similarities and differences.