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UNIX and Linux - variant Operating Systems

  Performance: Proprietary Hardware and Appliances UNIX Specialized Applications  
  Price: Commodity Hardware Linux Wintel Platform: Intel Hardware and MS Windows  
Open Compute Project Open Daylight Project
  Linux Foundation Apache Software Foundation  
  OpenStack Cloud Foundry  

Most UNIX operating systems are a complete operating system with the code, applications, and utilities provided by a single source or vendor; there is a commercial license with contractual requirements, charges, and restrictions. There are indications that changes may be occurring with the UNIX software model. The Open Group manages the UNIX trademark licensing program.

AIX UNIX IBM UNIX operating system FreeBSD UNIX-variant operating system HP UNIX operating system
Mac OSx UNIX-variant operating system OpenBSD UNIX-variant operating system Solaris - UNIX-variant operating system - Oracle Corporation

A significant portion of business application workloads are being migrated from UNIX and MS Windows to Linux. The increase in the deployment and use of the Linux operating system is driven by information technology demographics: data center scalability, distributed processing, mobile devices, cloud computing, Big Data, and open source projects. Free open source and commercial subscriptions of Linux-variant operating systems provide cost control and flexibility in long term planning.

The GNU/Linux is a UNIX-like operating system used on a wide range of devices from supercomputers, IBM mainframe, servers, desktop workstations, tablet PCs to smartphones. The Linux kernel is available under an pen source license. Functional specialization is occurring with the Linux-variants: base operating system platform for database, web servers, middleware, backoffice operations, internetworking with Microsoft domain models, integration with IBM mainframe systems, and mobile computing.

Available under under an open source license, the Linux community and leading software companies continue to develop the enterprise-class capabilities of Linux. There have been a number of advancements in technology by hardware manufacturers - Hewlett-Packard, Dell, IBM, and Oracle, and cost-driven information technology services being marketed which use open source Linux deployments: 1- Google Android, Amazon, HTC, and Samsung 2- HP webOS and LG. 3- Tizen. Additional Linux-variant mobile operating systems are being brought to market include: Mozilla FireFox - smartphones and Jolla Sailfish - mobile device operating system platform. Facebook and Twitter social media and data center operations also are invested in Linux.

Google Android - Linux-variant operating system Centos Linux  Debian Linux-variant operating system 
Fedora Linux-variant operating system  Gentoo Linux-variant operating system  Knoppix Linux-variant operating system 
Mandriva Linux-variant operating system  Red Hat Linux-variant operating system Slackware Linux-variant operating system
SUSE Linux-variant operating system Ubuntu Linux-variant operating system Yellow Dog Linux-variant operating system

The Linux Foundation is a non-profit organization supported by the leading hardware and software companies for contributing and collaborating with the developer community to improve Linux operations and client software services.

Public cloud services are being built using Linux in conjunction with other open source software. The use of Linux with mainframe systems and IBM Power provides an additional virtualized deployment platform.

SYS-ED analyzes and evaluates the leading UNIX and Linux distributions. The SYS-ED training service has been expanded to provide courseware and documentation services for many UNIX- and Linux-variant operating systems.