Operating system history before 2000

Apple DOS

Jun 11, 1978

Brand: Apple
Programmers: Steve Wozniak, Randy Wigginton
Price: $729

MacOS

Jan 24, 1984

Brand: Apple
Programmers: Steve Jobs

Windows 1.0

Nov 20, 1985

Brand: Microsoft
Programmers: Bill Gates
Price: $795

Windows 2.0

Dec 9, 1987

Brand: Microsoft
Programmers: Bill Gates
Price: $800

Mac OS 6

Apr 11, 1988

Brand: Apple
Programmers: Steve Jobs
Price: $39

WIndows 3.0

May 22, 1990

Brand: MIcrosoft
Programmers: Bill Gates
Price: $400

MacOS System 7

Jun 11, 1991

Brand: Apple
Programmers: Steve Jobs
Price: ??

Linux

Sep 11, 1991

Brand: Linux
Programmers: Linus Torvals
Price: FREE

Windows 98

May 15, 1998

Brand:microsoft
Programmers: BIl Gates
Price:$300

MacOS 9

Oct 23, 1999

Brand: Apple
Programmers: Steve Jobs
Price: $99