Software
These X-Terminals/stations run a proprietary operating system from HP — Netstation, formerly Enware, with some versions apparently based on VxWorks (probably those with RISC support).
This software runs on theoretically any Unix system, native support is available for HP-UX 10, HP-UX 11, IBM AIX and Solaris 2.x. A generic installation image is provided for other Unix flavors; this can be used to install the software via the provided installation shell script on for instance various Linux or BSD flavors.
Read more about this topic: HP X-Terminals