The Operating System Developers Homepage Index of operating systems and links to resources for programmers. http://www.500mhz.net/

Virtual Memory Tutorial Extensive discussion of virtual memory. http://cne.gmu.edu/modules/vm/

Inter-Process Communication Tutorial Interactive tutorial about message passing, semaphores, and monitors. http://cne.gmu.edu/modules/ipc/

KernelNewbies.org Resources for programmers new to kernel hacking. Example code, FAQs, utilities for debugging modules. http://kernelnewbies.org/

Bootstrap Tutorial How to write a bootstrapper. http://www.geocities.com/mvea/bootstrap.htm

Write Your Own Operating System [FAQ] The Hobbyist guide to writing your own operating system from the ground up, Question and Answer style on everything from PMode to filesystems to GCC and doing it in C++. http://www.mega-tokyo.com/os/os-faq.html

KernelCode News and reviews of kernels. http://www.kernelcode.com/

DBLP Bibliography: Operating Systems Links to many operating systems journals on the web. http://www.informatik.uni-trier.de/~ley/db/os.html

Therx OS Development Library A site containing archived documents relating to the programming of Operating Systems. http://xinit.port5.com/

The OSKit Project An open source set of libraries that can be used as building blocks for an operating system for x86. Includes documentation and publications. http://www.cs.utah.edu/flux/oskit/

ACM Special Interest Group for Operating Systems Tutorial for writing an operating system and links to group members' projects. http://www.acm.uiuc.edu/sigops/

The Operating Systems Resource Center Extensive information about booting, file systems, memory, architecture, and interfacing with other devices. http://www.nondot.org/sabre/os/articles

Operating Systems and System Software Contains sources of a minimal kernel, a new CPU scheduler for Linux, multithreading in Linux, systems software in DOS and collection of good reference material for OS lovers. http://www.angelfire.com/myband/unix/os.htm

CS 3210 Design of Operating Systems A course in operating systems with a focus on the design and construction of a modern OS kernel. http://www.cc.gatech.edu/classes/AY2000/cs3210_spring/

JOSH - Operating Systems Development Tutorial Tutorial on operating system development leading to the development of a real mode single tasking operating system developed in assembler. http://www.ansanest.com/josh/

Operating System Design Tutorials A set of design tutorials: tells you the whys as well as the hows. With examples for the x86 architecture. http://www.themoebius.org.uk/tutes/

Groovyweb: Operating system programming An open source os written in Turbo C (for DOS/ windows) and nasm (Windows/Dos/Linux) as well as two exclusive tutorials on how to write an operating system. http://www.groovyweb.uklinux.net/index.php?page_name=Operating%20system%20programming

Triple Fault Club Information on writing your own operating system, protected mode, and small independent OS projects with freely-available source code. http://my.execpc.com/CE/AC/geezer/os/

Tony Macs Programming Pages Focuses on x86 programming and includes links to other good sites, including MenuetOS. Collection of OS screenshots. http://www.tonymac20.freeservers.com/

Ace Operating System Project An open source operating system for X86 architecture. It also contains documents, specifications explaning various hardware. http://aceos.netfirms.com/