IBM AIX

Series of Unix operating systems from IBM Operating system AIXScreenshot of IBM AIX version 7.3DeveloperIBMWritten inCOS familyUnix (System V)Working stateCurrentSource modelClosed source; formerly source availableInitial releaseFebruary 1986; 40 years ago (1986-02)Latest release7.3 TL4 (7.3.4) / December 2025; 9 months ago (2025-12)Marketing targetWorkstation, ServerSupported platformsCurrent: Power ISAFormer: IBM ROMP, IBM POWER, PowerPC, x86 (IBM PS/2), System/370, ESA/390, IA-64 (Itanium)Kernel typeMonolithic with dynamically loadable modulesUserlandPOSIX / SUSDefaultuser interfaceKornShell (ksh88), Common Desktop Environment,(Plasma Workspaces and GNOME optional)LicenseProprietaryOfficial websiteibm.com/products/aix History of IBM mainframe operating systems Early mainframe computer OSes GM OS & GM-NAA I/O (1955) BESYS (1957) UMES (1958) SOS (1959) IBSYS (1960) MIT CTSS (1961) 7040/7044 Operating System (16/32K) (7040-PR-150) 1410/7010 Operating System(1410-PR-155) Miscellaneous S/360 line OSes BOS/360 (1965) TOS/360 (1965) TSS/360 (1967) MTS (1967) ORVYL (1967) RACS (1965) RAX (1966) MUSIC (1972) MUSIC/SP (1985) DOS/360 and successors (1966) DOS/360 (1965) DOS/VS (1972) DOS/V