What's free, looks like Mac OS X, just works and is actually Linux? The answer is gOS, which recently launched a new beta that builds on the distro's initial success and adds new tools like integrated Google Gadgets for Linux.

When it launched onto the scene late last year, gOS (which stands for good OS) made quite a splash for getting Linux into the U.S. retail giant WalMart. Through a partnership with PC manufacturer Everex, gOS brought Linux to your parents' generation via WalMart.

But chances are, if they picked up a gOS equipped machine, mom and dad would have no idea they were running Linux. Like the Xandros distro that Asus packages with the EeePC, gOS doesn't trumpet its open source credentials or advertise its infinite customization options -- it just works.

That's part of what makes gOS "Linux for the rest of us." The distro isn't intended to be powerful, nor is it a desktop package from a company that makes its real money off server installations as some many Linux distros are.

GOS has one simple goal -- make a lightweight, web-heavy operating system that anyone can use.

For Linux purists and those that enjoy spending hours fiddling with configuration files, gOS will be an utter disappointment. But gOS isn't aimed at hard-core Linux users; it's aimed at otherwise computer illiterate users who simply want an easy way to check e-mail, browse the web and share some photos online.

That's why gOS is marketed mainly to OEM partners like Everex or Sylvania and you're most likely to encounter it in a netbook or other lightweight "internet appliance."

The emphasis in gOS is on web apps and everyday tasks like browsing the web and checking e-mail. Under the hood gOS is based on Ubuntu, but aside from the familiar startup sound you're unlikely to notice the Ubuntu underpinnings. 

Administration tools are decidedly lacking in gOS, but that's expected since it isn't part of the distro's plan. While Ubuntu does a nice job of balancing user-friendliness and power, gOS simply tries to make things as easy as possible for the end-user. If that comes at the loss of what longtime Linux users consider very basic tools, then so be it. GOS is aimed at those who don't have slightest interest in power, they just want to use their PC.

GOS is also notable for embracing proprietary software. The original release shipped with Wine pre-installed and used Picasa instead of the tradition Gnome photo manager FSpot. The latest release continues that trend, shipping with Wine 1.0 to make installing Windows apps easier and Google Gadgets for Linux pre-installed are also pre-installed.

Once the system is installed and rebooted, you'll be greeted by a cheerful, bubbly, green interface that's closer in appearance to Mac OS X than other Linux distros.

As soon as gOS loads you'll see the new Google Gadgets sitting off to the left of the screen, not unlike the Gadgets shelf that ships with Windows Vista.

Although our theoretical computer illiterate wouldn't know it, it's immediately obvious that two primary tools power gOS -- Mozilla Prism and Wine (version 1.0 in the beta).

Using Prism, gOS is able to create a series of single-purpose web-based applications that can be accessed via the shiny toolbar at the bottom of the screen. Even if you have no idea what Linux is, when presented with a giant red envelope icon, you can probably work that that it checks your mail.

What might be slightly misleading is that it only checks your e-mail if you use Gmail. For other options you'll have to root around, find Thunderbird and then enter your login information. 

What would be really slick is if gOS could somehow ask for your e-mail during the setup process and then, based on the URL, use Prism to either create a Gmail app, Yahoo app, etc and have it ready to go in your toolbar. At the moment gOS (and every other OS for that matter) lacks such sophisticated tools.

The lower panel (or iBar as it's known in gOS parlance) also contains icons for other Google Services like Calendar, Google Docs and YouTube. If you dig into the main application menu you'll find more, such as the Picasa photo manager. 

In fact, there's such a prevalence of Google-based software, you'd be forgiven for thinking that the g in gOS stands for Google. 

It would be nice to see gOS offer some stand-alone webapps outside the Google Empire -- to be fair there are a few, like Facebook, but for the most part Google is clearly the favorite. Perhaps that will change now that Yahoo's Zimbra web-based desktop is in the Ubuntu repositories.

Other apps in the default gOS Gadgets beta include Skype and Pidgin for chat, as well as OpenOffice if the Prism-based Google options aren't your cup of tea.

But it's the default install of Wine 1.0 that's likely to raise eyebrows in the Linux camp. Wine critics argue that enabling Windows apps to run on Linux ends up hurting open source alternatives since people are less likely to pitch in and help improve the open source competitors when they can just run the Windows versions.

If you think that's about the stupidest argument you've ever heard, you're gonna love gOS. Picasa is included by default and, for those that prefer to think of the Gimp as someone scary from Pulp Fiction, it wasn't hard to get Photoshop CS 2 up and running on gOS. 

The developers of gOS may not be purists, but that's okay because neither is 99 percent of the PC buying world. And if you've always wanted to get your (supported) Windows apps running on Linux, gOS has just about the easiest setup you could hope for.

So how does gOS stack up when it comes to common Linux gripes like wifi drivers or peripheral support? Well, realize first of all that gOS is primarily intended to be loaded into low cost hardware and can thus avoid the usual Linux hassles -- wifi drivers, video codecs, etc -- by being prepackaged to work with specific hardware. As for external devices, the support will be same as you'd find in Ubuntu.

If you just download a copy of gOS and install it, you'll likely hit the occasional bump in the road just as you would with Ubuntu, Fedora or other distros. In our testing, the trackpad scrolling feature of our laptop never worked, but otherwise there were no hardware issue.

If you were to run across gOS by buying a new netbook that shipped with it, we have no doubt you'd be impressed -- you open the lid, press on and it just works. There's little or no setup and common tasks like checking e-mail or web browsing are simple to figure out.

The OS is snappy, which isn't a huge surprise given that most of its feature are powered by web 2.0, but even those that aren't, like OpenOffice, are plenty fast.

In the end we have no doubt that gOS will ruffle some feathers, but we also have no doubt that mom and dad won't care one bit as they sit in the Maldives emailing you "wish you were here" pictures of the beach from their new gOS-equipped netbook.