Windows 3.1
The second version of the Windows 3x series, this operating system introduces new features like clickable icons which opens up to group windows, or windows within windows. Later updates added Audio capture and CD-ROMs support. Susan Kare had also contributed to Windows 3.0, the preceding version through the development of desktop icons, and buttons for the OS.
This operating system was a major success to the public as this OS was widely sold and adopted by the public.