[Tomte]

"Octet" is still commonly used, often in network protocols.

It always means "8 bits", unlike "byte" that usually means "8 bits", but may mean some other quantity (although it is rare nowadays).

[userbinator]

It's also used in non-English documents extensively, French being a notable example where "To", "Go", "Mo", and "Ko" are encountered instead of "TB", "GB", "MB", and "KB" respectively.

[jasonm23]

True, a byte could mean something other than 8bits when dealing with deep legacy hardware systems.

But that ambiguity has almost vanished now.