Computing: Old Operating System Software

 
  DOS Software: Free software for FreeDOS, MS-DOS, PC-DOS...   OS/2 Software: Free software for IBM OS/2   BeOS Software: Free software for BeOS operating system   Windows Software I: Free software for Windows 1.x, 2.x, and 3.x   Windows Software II: Free software for Windows 95, 98, Me, NT4, 2000 and XP