Microkernel-based OS Efforts
By Christopher Browne. Brief, clear descriptions and critiquing of microkernel design concepts, with some links. Puts much current activity in larger context.

The Open Group: Advanced Research
Page listing several research projects: microkernel OSs (MK7, MK++, AD3) and other modules (CONVERSANT, CORDS, GIPC, SHAWS).

BugOS
New microkernel operating system for x86 computers, many features: network and Internet modules, file system (FAT); kernel handles memory, tasks, micro kernels, and some base devices: keyboard, video, hdd, and ramdrive. You Would also find info related to BugOS, Kernel, FileSystem, operating system, operációs rendszer, filesystem, filerendszer download, letöltés, software, szoftver and much more.

Microkernel-based and similar Operating Systems
Includes links and brief descriptions of microkernal based operating systems.

PETROS
By Trumpet Software International, 32-bit microkernel OS for x86 PCs coded in Object Pascal variant. Built from first principles to focus on small size, modularity, and be fully compatible with Win32 and industry standards; reads FAT-12/16/32. Low cost; free time-locked demo. You Would also find info related to operating system, OS, PETROS, 32bit, Trumpet Software, Trumpet Software International, winsock, PC, i386, x86, Windows, network, networking, real mode, protected mode, ping, ftp, inetd and much more.

React
Effort to clone Windows NT OS; goals: to run without change Win32 programs (binary application compatibility), Windows NT drivers (binary driver compatibility); needs i486, 16 MB RAM, 40 MB free disk space. [Open Source, GPL]