Operating System

The Mahalo Top 7

1. Wikipedia: Operating System
2. Open Directory Project: Operating System
3. HowStuffWorks: Operating Systems
4. ComputerHope.com: History of Operating Systems
5. Operating System Documentation Project: A catalog of Operating Systems
6. The Register: Security Windows vs. Linux
7. APC: How to Dual Boot Windows and Linux

Operating System Recent News and Articles

• OSNN: Windows, Linux and Macintosh News
• OS News: Operating System News
• OS Spy: Operating System News and Articles
• Google News: Operating System News Search
• Yahoo! News: Operating System News Search
• ZDNet: Next version of Windows: Call it 7 (2007)
• FoxNews.com: The Coming Smartphone Operating-System Wars (2007)
• PC Advisor: Mac, PC or Linux? Your next operating system (2007)

Operating System History

• Wikipedia: History of operating systems
• computinghistorymuseum.org: History of Operating Systems (76.9KBs) 
• Microsoft: Windows Desktop Products History
• Linux Online: The History of Linux
• Wikipedia: History of Mac OS X

Operating System Educational Resources

• Linux.org: Linux Online - Linux Courses
• Apple.com: Training & Certification
• Microsoft.com: Windows Help and How-to
• CNET.com: Windows Vista Basics
• Docnmail.com: Operating Systems Courses
• Oreilly.com: Safari Books Online - Operating Systems

Operating System Blogs and Discussions

• Computerworld Blogs: Operating Systems
• Draconis: Operating System Blog Search
• ITtoolbox: Operating System Blog Search
• WordPress Tag: Operating System Blog Search

Popular Operating Systems

Windows

• Windows Vista: Home Page | Mahalo | Wikipedia
• Windows XP: Home Page | Wikipedia
• Windows 2000: Home Page | Wikipedia

Mac OS X

• Leopard: HomePage | Mahalo | Wikipedia
• Tiger: HomePage | Wikipedia

Linux

• Linux: Home Page | Mahalo | Wikipedia
• Redhat: Home Page | Wikipedia
• CentOS: Home Page | Wikipedia
• PCLinuxOS: Home Page | Wikipedia
• Arch Linux: Home Page | Wikipedia
• Ubuntu: Home Page | Mahalo | Wikipedia
• Debian: Home Page | Mahalo | Wikipedia

Mobile Operating Systems

• Microsoft Windows Mobile: HomePage | Wikipedia | Mahalo
• Symbian OS: HomePage | Wikipedia | Mahalo
• Palm OS: HomePage | Wikipedia | Mahalo

Alternative Operating Systems

• FreeBSD: Home Page | Wikipedia
• Mac OS X Server: Home Page | Wikipedia
• Novell NetWare: Home Page | Wikipedia
• Solaris: Home Page | Wikipedia
• ReactOS: Home Page | Wikipedia
• AmigaOS: Home Page | Wikipedia
• HP-UX: Home Page | Wikipedia
• Inferno: Home Page | Wikipedia