who is the publisher of LINUX and UNIX?

Answer 1

The question must be broken down a bit to answer. Linux, the kernel was developed by Linus Torvalds. Linux, the mid-level portions of the operating system, were developed in part by GNU. Both have been supported by a large number of open sourced developers over time.

UNIX, the original, was developed by a group of AT&T employees at Bell Labs including Ken Thompson, Dennis Ritchie and Douglas McIlroy. Today, UNIX is more or less a family of operating systems based on splits from the original base.

Answer 2

There are numerous publishers, i.e. The present owner of the trademark UNIX® is The Open Group, an industry standards consortium. Only systems fully compliant with and certified to the Single UNIX Specification qualify as "UNIX®" (others are called "Unix system-like" or "Unix-like").
Linux is a Unix-like computer operating system family that uses the Linux kernel. A Linux system which includes system utilities and libraries from the GNU Project is sometimes referred to as GNU/Linux.[1]

Most development from 1984 to 1991 was done by the GNU project. After 1991, the Linux kernel developers began working on it as well as other enthusiasts. From the late-90s onward Linux also gained the support of corporations such as IBM[2], Sun Microsystems[3], Hewlett-Packard[4], and Novell, Inc.[5].

Answer 3

Unix and Linux have many different variations put out by different companies.

Answer 4

310 different entities develop and support Live versions, that run on the CDrom, in a Virtual RAM disc!

Immune to the "114,000 Microsoft Virus Definitions" and free of all popups. http://livecdlist.com

Others, numbering about 400+ are on http://distrowatch.com

There are also *BSD distros, numbering about 36, that also run on Macs, DEC Alphas, Sun Sparcs, and more, on those sites!