| Subject | English | Czech |
| comp. | mobile OS | mobilní operační systém |
| comp. | mobile OS | mobilní platforma |
| comp. | mobile OS | operační systém pro mobilní zařízení |
| gen. | mobile OS | mobilní OS |
| comp., MS | OS/2 | systém OS/2 (A protected-mode, virtual memory, multitasking operating system for personal computers based on the Intel 80286, 80386, i486, and Pentium processors. OS/2 can run most MS-DOS-based programs and can read all MS-DOS disks) |
| comp., MS | Windows OS Loader | Zavaděč operačního systému Windows (A Boot Configuration Data (BCD) application object) |