Unix allows each user to run more than one job at a time allowing for a switch of attention between jobs. This multitasking ability allows users to be more productive. The X Window System makes it easier to keep track of all your different processes by allowing multiple viewports to your work environment.

Today, a variety of modern servers, workstations, mobile devices and embedded systems are driven by Unix-based OSes, including macOS computers and Android mobile devices.

Unix provides a multi-user environment with strong user permissions, making it ideal for enterprise-level applications. However, Unix can be more expensive to acquire and maintain due to licensing costs. On the other hand, Linux is a free and open-source operating system that shares similarities with Unix.

UNIX is a proprietary operating system, and not all versions are freely distributed. However, specific UNIX versions are free for development use. Linux is free of cost for all users and is an open-source system.