Personal Computer Disk Operating System
Q DOS OS QDOS was heavily inspired by CP/M, to ensure software compatibility
FreeDOS is a free, open-source operating system designed to be compatible with MS-DOS
There is a need for GOPI os, that starts like old TV, having GUI built in the kernel not the driver and network stack
FreeRTOS Real-time microkernel (non-monolithic
Advanced user account controls, file permissions, job accounting.
Haiku is a unique project that preserves the innovative spirit of BeOS—focusing on a fast, elegant, and unified personal computing experience
Before OS/360, IBM developed separate hardware and software for each computer model. Programs written for one system wouldn’t run on another.
Microkernel-like, with heavy reliance on a virtual machine Portable virtual machine: Dis VM runs the Limbo language everywhere
MULTI IDE showing INTEGRITY tasks, trace debugging & memory partitions
Minimalistic system — by design has a tiny attack surface Lacks multi-user accounts or advanced permissions
Technically not a standalone OS kernel, but a network operating system layer installed on top of MS-DOS or Windows