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
Monolithic with distributed system extensions
Beautiful Aqua GUI with advanced graphics (Quartz, Metal)
MenuetOS (also known as MeOS) Tiny footprint: Core OS fits on a 1.44 MB floppy (still with GUI, network, and apps)
MINIX is a historically significant OS that proved the practicality of the microkernel design and served as the catalyst for the world's most popular kernel, Linux
Multiplexed Information and Computing Service
