10 Operating Systems the world left behind                                                                           30 March 2009
CP/M, DOS, Mac OS, AmigaOS, GEOS, OS/2, NeXTStep, BeOS, Windows 95

Android operating system for mobile devices                                                                         5 October 2011
These are the droids you're looking for: an Android guide;

Boot Camp                                                                                                                          10 April 2006
public beta software enables Intel Mac to run Windows XP; partition your hard drive for Windows system;10GB+ will do; (more); See also Dual booting (below)

Browser Linux - an extremely lightweight & fast OS for older x86 computers[Linux]                20 August 2011

Cloud See gOS Cloud

Cloud computing operating systems                                                                                 1 January 2009
Microsoft Azure aims to redefine OS; Google App Engine developer tool to run web applications on Google infrastructure; AWS(Amazon Web Services) hosted public data sets use public data within your Amazon Elastic Compute Cloud (Amazon EC2) environment hosted on AWS free as an Amazon EBS snapshot; iCloud, EyeOS & Glide web based desktops; 

Cloudo IOS (an Internet OS launches Alpha)    formerly Xindesk                                          23 February 2008
server-side configuration LAMP(Linux, Apache, MySQL, PHP); communication between server & client with AJAX; data stored in XML; XSL used to transform data to HTML for user interface; Javascript for event related tasks...

Debian free operating system(OS)                                                                                          27 February 2006
An operating system is the set of basic programs & utilities that make your computer run. Debian uses Linux kernel (core of an operating system), but most basic OS tools come from GNU project; hence the name GNU/Linux; 15490+ packages, precompiled software

Definitive guide to keeping your PC [& Windows] up to date                                                  18 March 2010

Dual booting  What you need to know before dual booting                                                    7 January 2012

eyeOS an open-source cloud computing web desktop                                                           18 December 2009

G.ho.st(Global Hosted Operating SysTem)                                                                             18 July 2007
desktop, files & favorite web services combined them in a single web-based platform

GNU's Not Unix!                                                                                                                  27 January 2002
GNU Project launched in 1984 to develop a free Unix-like operating system; GNU is a recursive acronym for ``GNU's Not Unix''; pronounced  "guh-NEW"; Variants which use the kernel Linux are now widely used(GNU/Linux systems); 31 Jan 2012: Free Software Foundation relaunches GNU education website;

Google Chrome OS initially for netbook release in late 2010                                                 8 July 2009
10 Things we're dying to know about Chrome OS; 9 must-have features in a Google OS; Google Chrome OS;

Google Operating System: Unofficial news & tips about Google                                            24 July 2011

gOS Cloud  Linux based                                                                                                       5 December 2008
Good OS Cloud integrates web browser with compressed Linux operating system kernel for immediate access to Internet, integration of browser & rich client applications, & full control of the computer from inside the browser;
   
How To Build Your Own Hackintosh                                                                                         15 December 2011
Free guide for a vanilla PC running a hacked version of Apple's Mac OS X operating system; See also Computing harmony: seamlessly blend windows & OS X(free download);

iCloud cloud-based operating system to store files & applications online                                    13 April 2009
free service requires Internet Explorer with Java Script installed

Hanging system  A simple fix for hangs when closing Windows applications                             25 August 2011

Index of Reviews(Windows Secrets Newsletter feature)                                                         5 August 2004
paid version offers quick links to latest competitive ratings of new Windows-compatible hardware

Internet Operating Systems(IOS) See Cloudo above                                                            19 April 2011
TipToe: private Web search tool & secondary browser for iOS; Using iOS: your guide to the latest & greatest mobile operating system (free download forMakeUseOf registrants);

Jolicloud OS for netbooks                                                                                                        20 August 2011

KIDO’Z  first International computer operating system for children ages 3-7 years                  18 May 2009
Adobe-Air-based browser for children; multilingual support in 17 languages, deployed in 80+ countries; parent filtered search engine; freeware download; Parental Control Account;

Lifehacker’s guide to 64-bit vs 32-bit operating systems                                                           22 December 2009

Linux(Wikipedia)                                                                                                                   22 October 2011
based on free & open source software, all varieties are Unix-like & based on Linux kernel first released October 5, 1991by Linus Torvalds; See also Liferea 1.7 Linux feed reader compatible with all computers running Linux;

Linux Documentation Project(TLDP)                                                                                      15 December 2004
How to's; Guides; FAQs; collaborative development of reliable documentation for Linux ranging from online documentation(man pages, HTML, etc) to printed manuals on topics like installing, using, & running Linux; tips on switching from Windows to Linux; How to Run Linux Under Windows; (5 Nov '08)Why your next computer might be a Linux PC; 5 reasons to get excited about Linux on the Netbook(low-end machines); Canonical’s new Component Catalogue makes building a Linux-friendly PC easy; Best of Linux software;

Linuxnewbie.org : Wanna learn Linux?                                                                                     30 July 2001
discussion board, product reviews, press releases, book recommendations; "newbies of the Linux community, in Order to form a more perfect Union, establish better documentation, ensure cross platform understanding,  provide for the common computer user, promote the general goodness of Linux & other OS's, & secure the Blessings of Linus to ourselves & our Posterity, do ordain & establish this Website for the Linux newbies-Linuxnewbie.org" -sensei@linuxnewbie.org

Linux Portaloo portal & discussion site aggregates news;                                                          9 July 2002
(Jan.2006) See also Linux history, basic commands, download;

Linux/UNIX Tutorial Site                                                                                                        7 June 2003
10 key lessons; logging in & browsing directory structure; networking utilities & system administration; bulletin board;

Lion Mac operating system                                                                                                    16 November 2011
Lion, King of the OS Jungle: Your ultimate guide;

Mac OS X Leopard                                                                                                              13 April 2006
revamped iChat platform, RSS to email integration, email & note-taking, create custom widgets, multiple virtual desktops, better calendaring; supports installation of Windows XP; download Boot Camp & partition your hard drive for Windows system; 10GB+; 

Mac OS X Lion: the ultimate guide (free download from MakeUseOf)                                    23 November 2011
See also Think different: how to build your own Hackintosh(free download) &  Computing harmony: seamlessly blend windows & OS X(free download);

MenuetOS                                                                                                                             13 August 2007
supports 32/64 bit x86 assembly programming for smaller, faster, less resource hungry applications, no roots within UNIX or POSIX standards, not based on any particular OS; designed to remove extra layers between different parts of OS which complicate programming

Microsoft Azure cloud computing operating system Aims to re-define the OS                          28 October 2007

Mobile Operating Systems Google Android; Symbian;                                                         2 January 2009                                                                                                                             

Moo0 System Monitor 1.4.0                                                                                                   9 May 2009
check how operating system is utilizing different resources; resource monitor(long vertical bar) provides basic data on CPU, network, & memory utilization; bar can be shrunk; Windows XP+;

MultiOS Browser Test  test your Internet Browser for conformance to Web standards             2 April 2005.

OSSwin project: Open Source for Windows                                                                          27 March 2006

Portable OS  6 best portable OS;                                                                                              13 April 2009

Reuel's Guide to Multi-booting                                                                                               5 August 2001
step-by-step recipe for a system that can boot 4 different operating systems

Semantic web as an operating system: with users & permissions!                                            14 February 2009

Switching From Windows to Mac? OR Why Switch? Run Windows On Your Mac!              29 March 2007

Ubuntu("Humanity to others") Linux-based                                                                              11 June 2006
free, community & professional support, desktop & server use; 6.06 supports PC(Intel x86), 64-bit PC(AMD64) & PowerPC(Apple iBook & Powerbook, G4 & G5); 16000+ applications including word processing, spreadsheet & programming tools; Ubuntu Forums;  Ubuntu Linux "Feisty Fawn" Release, May 2007 - Gnome desktop graphics & speed, easier connection to wireless networks, WPA wireless encryption support, looks for browser bookmarks, favorite links, desktop wallpaper & Instant Messaging contacts; May 2009: Ubuntu 9.04 free operating system & applications such as web browser, document & spreadsheet software, & instant messaging(IM); compatible with all operating systems running Linux; 24 Jan 2012: Ubuntu: an absolute beginner's guide(download password: makeuseof);

Update Your Device Drivers                                                                                                    25 February 2010
Device drivers are software packages that keep many parts of your computer system running & working together smoothly. As you change the hardware & software components of your system, the device drivers on it may become obsolete.

Virtual drives free way to try or use a separate OS without messing with your hard drive        11 April 2009
Beginner’s guide to creating Virtual Machines with VirtualBox(virtual machines generally refer to x86 virtualisation software allowing operating system(guest) to run on another OS( Host), in container window fullscreen, or in seamless mode, where just one application is run from the “guest”)

Wayne's Windows 2000 Resources for Administrators & Users                                             29 November 2003

Web-based Operating Systems(aka WebOS) & Web Desktops: A Mini-Guide                     12 April 2007
software platform interacts with user through web browser independent of local operating system; network application system for integrating web applications into web based work space; virtual web desktop running in browser software & characterized by an environment like Windows, Mac, or Linux but with more functionality being dependent on internet; ability to save work & settings over internet rather than to desktop(Wikipedia); WebOS is distinct from Internet OS's as independent of traditional individual computer operating system; Internet operating system/web platform with functions pertinent to Internet media including wireless cards & other devices as well as web pages; eyeOS 1.0 launched June 2007; (18 July 2007) Web-Based Operating Systems: take your desktop inside your browser with G.ho.st (Global Hosted Operating SysTem) combine desktop, files & favorite web services into a single web-based platform; Jooce(flash based); review; (6 March 2008) Get yourself an XP system while you still can; 31 Oct 2011: HP’s WebOS tablet operating system, acquired when they bought Palm, may shut down following the sudden dropping of the TouchPad, the first WebOS tablet only seven weeks after it went on sale; 

WebOS See Web-based Operating Systems

Windows 7 features:  Libraries & Homegroups                                                                        14 May 2009
Turn your Windows 7 PC into a wireless hotspot; Pros & cons of switching to Windows 7; Master list of new Windows 7 shortcuts; Get help from the Windows 7 Reliability Monitor; Running a virtual XP machine in Windows 7; Windows 7 keyboard tricks; How to remove unwanted crapware from your brand new Windows 7 system; 5 Most common Windows 7 problems & how to fix them; 7 simple steps for setting up Windows 7; Complete guide to Windows 7 keyboard shortcuts; Make the most of Windows 7's Libraries; Recovering deleted files on Windows 7; Don’t pay for software you don’t need — Part 1(You don’t need to defrag your drives any more; only need use Win 7 backup now); 24 Jan 2012: Using Windows Safe Boot to diagnose & repair problems((XP, Vista & Windows 7);    

Windows 98 & Windows Millennium Edition unsupported                                                      20 June 2006
Microsoft support for these operating systems ceases - Microsoft cannot patch a critical security vulnerability;

Windows Genuine Advantage(WGA) anti piracy system                                                         28 May 2009
Free program from Microsoft stops WGA(WGA will be renamed Windows Activation Technologies(WAT) in the forthcoming Windows 7); How to remove WGA from your PC;

Windows NT & Windows 2000 Tutorial                                                                                1  May 2006
background & set-up information on Ms Windows operating system family; from training course Network+ Module 3 - Major Network Operating Systems ;  links to tutorials on networking fundamentals & operating systems; 

Windows On Speed: a free PC tune up guide  how to speed up your slow PC             16 February 2011
Why Windows slows down; How to separate data & operating systems with partitioning; importance of defragmenting hard drive; Free software for speeding up your PC; perils & overpromise of registry cleaners;Easy steps you can take to speed up your PC;

Windows Process Library                                                                                                      5 May 2005
Ctrl-Alt-Del - "processes" appear in Windows Task Manager; free database maintained by UniBlue who sell WinTasks Pro to remove problemware;

Windows Processes                                                                                                               9 April 2005
Task Manager: Applications view of running programs; Performance & Networking view statistics; Processes view(hard to identify from image names); ProcessLibrary.com searchable database identifies processes & has DLL Search for cryptic error messages; See also Sysinfo.org's Startup Applications List & Task List Programs from Answers That Work & Google's specialized Microsoft search; WinTasks Process Library; Shavlik, Secunia top Windows Update alternatives; WindowsUpdate.log record of system's patching activity; Navigating the maze of Microsoft patches; Freeware outdoes Windows' built-in system tools; 25 Aug 2011: Tame a new system’s hard-drive bloat; A simple fix for hangs when closing Windows applications; See Index of Reviews(Windows Secrets Newsletter feature);   

Windows 'Registry Cleaning' Software Packs(Langa Letter)                                                  1 October 2006

WindowsSecrets.com Reviews   14 April 2011: Windows Secrets beta                                     16 June 2006
comparative reviews by respected Windows testers, compatible hardware products; (20 June 2006) Microsoft stop supporting Windows 98 & Windows Me;

WindowsSecrets.com/WinFind                                                                                               10 July 2004
Windows Tips Search Engine information from reliable, trusted experts; (20 June 2006) Microsoft stop supporting Windows 98 & Windows Me; Windows Vista A to Z - Reviews, analyses, how-tos, hot issues & predictions about Microsoft's new OS; Search within Windows Secrets, LangaList, & Brian's Buzz; 16 Dec 2010:Windows Secrets Lounge on new vBulletin platform;

Windows Tips Search Engine                                                                                                  20 February 2003
See also Tips,tricks & tweaks for Windows XP, Windows 2000 & Windows NT; Twinto: Tweaks, Info & Tools: tune Windows; fix problems or improve Windows XP, free;

WindowsUpdate.log record of system's patching activity                                                          23 July 2009

Windows Vista Tips & Tricks                                                                                                 4 February 2007
See also A History of Microsoft Windows 23-year history of Windows OS through screenshots; Windows Vista & Office 2007: Pros & Cons Of Upgrading - The Becta Report(MasterMind Explorer 189, 15 Feb 07); Windows Tweakguides -Vista, XP;  XP virtual computing avoids dual-boot complexity; Print to PDF in Windows Vista; ReadyBoost(similar tool for XP) makes Vista faster with jump drive in USB slot to boost system performance using cheap external flash memory devices; XP beats Vista? Could be the OS or poor drivers; Downgrade Vista to XP in 7 easy steps; Upgrading to Windows 7 for improved memory management & security; 24 Jan 2012: Using Windows Safe Boot to diagnose & repair problems((XP, Vista & Windows 7);

Windows XP                                                                                                                         6 March 2008
Get yourself an XP system while you still can; Keep XP fresh until Windows 7 arrives(15 May 2008); XP beats Vista? Could be the OS or poor drivers; How to maintain XP after Microsoft ends support; (2 July 2009) Forced updates plague Windows users worldwide; Running a virtual XP machine in Windows 7; How to remove Windows Genuine Advantage from your PC;11 Nov 2010: Windows XP: Looking back, looking forward(XP will get security patches until April 2014);  24 Jan 2012: Using Windows Safe Boot to diagnose & repair problems((XP, Vista & Windows 7);

WinFind                                                                                                                                 9 October 2003
specialized search engine for results from sites considered to have high-quality Windows information

YouOS(alpha)                                                                                                                      20 March 2006
java language operating system with rich text editor, chat, email, RSS, file management, stickies, Flickr RSS; run small applications like sticky notes or clocks, large applications like word processing, mp3 players, & instant messaging; FAQ;