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Additionally, some programs run on more than one operating system, for example Sendmail. It runs on *BSD, Linux, Solaris and many other Unix-style OSes. Conversely, many programs shipped separately int the Unix world are tightly integrated with, thus part of, the Windows OS. Again, the above example was Explorer for Windows. What is the difference between Windows Explorer and Internet Explorer (Answer: extremly little if any since with most recent versions, Windows Explorer displays everything as web pages)? The browser is separate from the OS in Unix OSes, but a system level program in Windows. People that provide a blanket statement (XX vulns in Linux, X in Windows), feed misinformation.

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