Following an eye exam, you’ll be given a prescription with abbreviations such as OD, OS, SPH, and CYL. Your provider may know what these mean — but do you? We explain what OD, OS, and the ...

However, of all the iterations of Elementary OS I've used over the years, version 8 is, by far, the most polished. Beyond beautiful aesthetics, Elementary OS 8 also performs really well.

Overall, FreeBSD is the most commonly used of these OSS BSDs and also the one you’re most likely to think of when considering using a BSD, other than OS X/MacOS, on a desktop system.

Mac OS 9 was the last classic OS before Apple transitioned into the OS X series with a brand-new Unix-like system. When Apple introduced OS X.2 Jaguar at WWDC in 2002, Steve Jobs held a funeral ...

Prior to June 2021 OS X 10.7 Lion or Mountain Lion would have cost you £19.99 each for the download code. Now Apple has stopped charging for the ageing operating system versions.