???? – 2025retired
Dell Latitude
“It survived every drop, spill, and quarterly review. In the end, only a rebrand could stop it.”
“First to ACLs, first to love a logical volume, last out the door at 41.”
HP-UX, Hewlett Packard's proprietary take on Unix, first shipped in 1984 and ran everything from the Integral PC and Motorola 68000-based workstations to PA-RISC boxes and, finally, Itanium-powered Integrity Servers. Built on System V, it earned genuine affection for being ahead of the pack: the first Unix to offer access-control lists for file permissions, and among the first with a built-in logical volume manager.
Support formally ended on December 31, 2025, when the discontinuation of Itanium processors took HP-UX's reason for being with it. Even in retirement it lingers gracefully, with Mature Support on HPE Integrity without Sustaining Engineering through at least 2028. Its final version, HP-UX 11i, remains certified to The Open Group's UNIX 03 standard — a dignified last word from a dignified old workhorse.
Spotted something wrong? Every fact on this page traces to a dated source. Fixes make the graveyard better for everyone.
“It survived every drop, spill, and quarterly review. In the end, only a rebrand could stop it.”
“Swiped millions of times, it never once asked for small talk. Rest easy, yellow friend.”
“It recorded everything we loved, right up until the very end.”