Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. History of Microsoft Windows. Windows 1. 0, Windows 2. 0, Windows 2. 1x, Windows 3. 0, OS/ 2, Windows 3. 1x, Windows NT, Windows NT 3. 1, Windows 95, Windows NT 4. 0, Windows 98, Windows 2000, Windows Me, Windows XP, Windows Server 2003, Windows Fundamentals for Legacy PCs, Windows Home Server, Windows Vista, Windows 7, Timeline of Microsoft Windows, Comparison of Microsoft Windows versions, Microsoft Version Number, List of Microsoft codenames