OpenServer

OpenServer
SCO OpenServer 5.0.7 running the X.desktop interface
DeveloperSCO, Caldera Systems, Caldera International, The SCO Group, Xinuos
OS familyUNIX System V (SVR3.2/SVR5), BSD
Working stateCurrent
Source modelClosed source
Initial release1989; 35 years ago (1989)
Latest release10.3 / 2016; 8 years ago (2016)
PlatformsIA-32
x86-64 (OpenServer 10)
Kernel typeMonolithic kernel
UserlandPOSIX / SUS
LicenseProprietary
Official websiteOpenServer 6
OpenServer 5
SCO OpenServer Release 5.0.7 box set

Xinuos OpenServer, previously SCO UNIX and SCO Open Desktop (SCO ODT), is a closed source computer operating system developed by Santa Cruz Operation (SCO), later acquired by SCO Group, and now owned by Xinuos. Early versions of OpenServer were based on UNIX System V, while the later OpenServer 10 is based on FreeBSD 10. However, OpenServer 10 has not received any updates since 2018 and is no longer marketed on Xinuos's website, while OpenServer 5 Definitive and 6 Definitive are still supported.