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Ultrix
open-in-new
<p>Ultrix (officially all-caps ULTRIX) is the brand name of <a href="/facts/Digital_Equipment_Corporation/ztxs6keA">Digital Equipment Corporation</a>'s (DEC) discontinued native <a href="/facts/Unix/0pNL2seI">Unix</a> operating systems for the <a href="/facts/PDP-11/9HkGUzFn">PDP-11</a>, <a href="/facts/VAX/N3r13IHH">VAX</a>, <a href="/facts/MicroVAX/p1uEFVt9">MicroVAX</a> and <a href="/facts/DECstation/tBSAsdSd">DECstations</a>. </p>