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Zorin OS 17 Has Arrived
(blog.zorin.com)
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
If you had respect for open source software, you'd be willing to pay for it
They are just showing you that you don't need to spend $2000 on Autocad and other listed software, because Zorin has all these open source tools bundled in it.
Though tbh replacing Autocad or office365 with FOSS alternatives are bold claims because these alternatives just aren't viable in a commercial environment.