List of Operating Systems of Computer, Their Developer and Year of Origin

Name of the Computer Operating System	Developer	Year
Uniplexed Information and Computing Service (UNIX)	Bell Labs Research Center	1970
Microsoft Disk Operating System (MS-DOS)	Microsoft Corporation	1981
Macintosh Operating System (Mac OS)	Apple Inc.	1984
Windows	Microsoft Corporation	1985
Linux	Linus Torvalds	1991

Badan Barman at present working as an Assistant Professor in the Department of Library and Information Science, Gauhati University, Guwahati-781014, Assam, India. He is the creator of the LIS Links (http://www.lislinks.com) - India’s most popular social networking website for Library and Information Science professionals. He also created the UGC NET Guide (http://www.netugc.com) and LIS Study (http://www.lisstudy.com) website.