HP now owns a lot of not very popular and classic operating systems under the sun.
They own OpenVMS and Tandem fault tolerant Non-Stop operating system. Two GREAT operating systems that few developers know today.
And then they spun off a great measurement and test equipment company — Agilent Technologies, that makes instruments and equipment for life sciences, medical diagnostics, and chemistry applications.
The separation of HP with Agilent was overseen by none other than Carly Fiorina.