Windows, Mac, Android…perhaps these are the only OS you’ve ever heard of. Here are some more….
10 Free Operating Systems You Maybe Never Realized Existed – MakeUseOf
Chances are, your computer came with Windows or macOS. These operating systems may seem free, but they’re not. Manufacturers have to pay Microsoft for Windows, and macOS updates are only available to people who have purchased Macs. On our end, the cost is hidden in the price of the computer.
Link: https://www.makeuseof.com/tag/5-free-operating-systems-realized-existed/
via:MakeUseOf
