"OpenStep was an object-oriented application programming interface (API) specification for an object-oriented operating system, with the basic goal of offering a NeXTSTEP-like environment on a non-NeXTSTEP operating system. OpenStep was principally developed by NeXT with Sun Microsystems, to allow NeXTSTEP (like) development on Sun's operating systems, specifically Solaris."@en . . . . . . . . "Subsumed intoOS X" . . . . .