Webware

The new prototype UI of OpenOffice.org.

(Credit: Sun)

I am possibly the only one among my co-workers who hasn't moved to Office 2007. I just can't stand the ribbon toolbar, which makes working with documents require a lot of mouse clicking. The traditional menus have been working just fine and I prefer being able to move around with keyboard shortcuts.

It's sad that together with Windows 7, Microsoft is forcing this new user interface on all of us. Applications that come with the new operating system, such as Write or Paint, are also using the ribbon toolbar instead of menus.

And it seems Sun is doing the same thing with its popular OpenOffice.org suite, which offers free alternatives to Word, Excel, and PowerPoint.

According to a blog from Frank Loehman, a developer of OpenOffice.org, Sun is working on creating a new user interface for the open-source office suite. And from the screenshot, the new UI seems very much like the ribbons found in Office 2007.

However, fortunately, the menu bar is still there. Hopefully this means the suite will still offer the menu UI in addition to the ribbon bar.

According to Loehman, the new UI is still in the testing phase and the content of the toolbars and the group labeling are subject to change. Sun is looking for user feedback on the new UI and my feedback is this: just get rid of the ribbon or offer people the option to pick between the two of them.

Firefox 3.5 brings the world's second-most popular browser up to speed with current browsing technology and trends, and perhaps nudges it just a bit ahead of the competition. However, it is by no means the leap ahead that its predecessor Firefox 3 was, and it's clear that the competition isn't going away anytime soon.

Available for Windows, Windows Portable, Mac, or Linux, Firefox 3.5 nevertheless represents the best Firefox we've yet seen from Mozilla. This comes as no surprise, and with a testing process that involved four beta builds, three release candidates, and a version change to reflect what Mozilla described as the originally-unintended breadth of the improvements being made, most of the new features are no surprise, either.

Private Browsing, known to IE users as InPrivate, Chrome users as Incognito, and Safari users as, well, Private Browsing, finally comes to a public version of Firefox. It's been available to the 800,000 or so beta testers since December 2008. If you're not familiar with it, users can toggle on or off the browser's history, cookies, and other browsing traces at will via the Tools menu or CTRL+SHFT+P. A new window will open. Among its other uses that serve as fodder for second-rate comedians, it's an excellent tool for avoiding leaving tracks on publicly-used computers and its about time that Firefox finally got it. In fact, Firefox has had it in various stages of development for four years.

I'm not sure how connected Firefox's development of Private Browsing is to this next feature, but I can see far more users gaining traction from having the fine, granular control of browsing tracks that's now available in v3.5. The Clear Private Data window has been replaced by a Clear Recent History option, using the same hot key combo and in the same place in the Tools menu.

Firefox 3.5 slideshow

Under the Clear Recent History window, you can delete your entire recent browsing history over the past hour, two hours, four hours, today, or all content in your history. From its Details drop-down menu, you can tailor the data purge to Browsing and Download history, Form and Search history, Cookies, Cache, Active Logins, Site Preferences, and Saved Sessions. From within the History window, you can also right-click on a site to Forget this Site, which will remove all instances of that site from your history records. Because your Most Recent Sites folder pulls from your history, you gain this level of control there, too.

Another excellent improvement in v3.5 that pushes Firefox ahead of its competitors is aggressive developer support. This may not sound impressive to most users, and if you're not a developer, I can see why its hard to get worked up about support for CSS media tags, HTML5 local storage, downloadable fonts, Web worker thread, and native JSON support, or SVG transforms--it all sounds a bit too much like alphabet soup.

Firefox 3.5 comes with geo-locating turned on, so it always knows where you are (with your permission.)

(Credit: Screenshot by Seth Rosenblatt/CNET)

However, embedded ICC profiles, and support for Ogg Vorbis and Theora video and audio means that image colors will look better and closer to how they were intended, and no plug-in will be required for properly-encoded multimedia. Since Vorbis is open-source, this will lend those formats a huge boost while rendering those pages more stable. Here's an example video from Firefox that offers a tour of the new browser, or you can check out this sample from Daily Motion. Non-Firefox users will either see the Flash version (as on Daily Motion), or be directed to download the OGV file.

The "awesome bar" that debuted in Firefox 3 has become one of my favorite features. I've personalized my browser to eliminate the search bar, and now I use the location bar for all my searching. In v3.5, Mozilla has improved the search functionality so that you can show only bookmarks, by using an asterisk after a query such as "cnet *", or show only tags by using a plus "cnet +".

You can also tear off tabs as you can in the Webkit-based browsers Chrome, Safari, and IE, although unlike those browsers, Firefox's tabs are not sandboxed. This means that, if the browser crashes, you're still hosed, although Mozilla says this feature--known in development as Electrolysis--is being worked on.

In the meantime, Mozilla has imported better session control that users could only get before from add-ons like Session Manager. Now, if Firefox crashes, you get the option to choose which tabs to revive. If a Flash-based or heavy JavaScript site was the cause of that crash, you don't need to bring back that particular tab and risk getting caught in a crash-and-restart cycle of frustration.

Firefox 3.5 natively supports HTML5 and embedded Ogg video content.

(Credit: Screenshot by Seth Rosenblatt/CNET)

Mozilla abandoned development of its own geolocating technology in Firefox, but that doesn't mean that Firefox 3.5 doesn't possess the ability to know where you are. Using Google's tech, Firefox can pinpoint where you are so that in search queries, for example, you'll get the most locally relevant results first. Turning this off isn't difficult, either. Under about:config, search for "geo.enabled" and change True to False by double-clicking on it.

Performance has always been one of the keys to browser popularity, and much of Google's success with Chrome can be attributed to its fast JavaScript rendering marks. The resurgent interest in Safari also comes from its JavaScript benchmarks and Apple's claim that Safari is the fastest browser on the market with its Nitro JavaScript engine. Firefox 3.5 doesn't beat them on the JavaScript front, but it's within shooting range.

On a Lenovo T400 laptop with a Core 2 Duo T9400 processor running at 2.53 GHz, with 3 GB of RAM and Windows 7 RC 7100, I ran the SunSpider JavaScript test and Dromaeo's subset of JavaScript tests on Firefox 3.0.11, Firefox 3.5, Internet Explorer 8, Chrome 2, and Safari 4. As much as I like Opera as an all-in-one browser, I left it out because Opera 9.6 hasn't stood up well to the improvements that the field has made in the past year, and Opera 10 beta isn't ready to be compared to public releases at this point. Remember that for SunSpider the lower number is better, while the opposite is true of Dromaeo.

Firefox users can now rip tabs off into new windows, or drag them back into the old one. Still no sandboxing, though.

(Credit: Screenshot by Seth Rosenblatt/CNET)

Firefox 3.0.11 completed SunSpider in 2695.4 milliseconds, and 44.22 runs per second, while Firefox 3.5 notched 1319.6 ms on SunSpider and 91.18 runs/s. This falls in line with Mozilla's published benchmarks of 3669 ms for Firefox 3 versus 1524 ms for Firefox 3.5. In both "official" numbers and in my own tests, Firefox 3.5 comes out around twice as fast for JavaScript.

Meanwhile, Chrome 2 hit 322.1 runs/s on Dromaeo and 712.2 ms on SunSpider. Either way, Chrome is significantly faster than Firefox for JavaScript, one-third faster judging by SunSpider and twice as fast by Dromaeo. Safari 4 scored 915.6 on SunSpider and 239.02 runs/s on Dromaeo, slightly slower than the its Webkit cousin Chrome but still faster than Firefox. Internet Explorer marked 4434.6 ms in SunSpider, but crashed on Dromaeo while testing base 64 encoding and decoding.

Firefox 3.5 is around twice as fast as Firefox 3. Chrome and Safari are faster with JavaScript, though.

(Credit: Screenshot by Seth Rosenblatt/CNET)

It's important to note that speed is not the only criterion for judging a decent browser. Each browser only had open two tabs, the results of its Dromaeo test and the results of its Safari test. Safari consumed nearly 135 MB of RAM, IE saw 104 MB, Firefox 3.5 hit 66 MB, and Chrome logged 46.5 MB. These results will fluctuate depending on your computer and any other tasks your browser is running at the time, but they give a decent idea of how each browser is performing during these tests.

Other useful tests look at Web standards rendering, like the Acid3, and deeper analysis of the SunSpider results. Chrome and Safari both reach 100/100 on the Acid3 test, while Firefox makes it to 93/100. Official release notes for Firefox 3.5 can be read here.

Firefox 3.5 is a much-needed improvement to the world's most popular alternative browser. At the time of writing, Mozilla was about to log the 2 millionth download after only 7 1/2 hours. While some of the improvements, such as the HTML5 and other developer enhancements will continue to make the browser their first choice, many of the other changes merely keep it in-line with the competition. For now, Firefox will continue to rely on its vast base of developers and users who value their customizations over superlative claims, so long as Mozilla keeps its browser close enough to its competitors. Now that Firefox has kicked open the door against Internet Explorer, it'd be foolish to expect that they'd be the only ones to rush through it.

Yesterday's introduction of Chrome version 2.0.172.28 was touted by Google as being up to 30 percent faster for handling JavaScript. After using the update to the stable release extensively for the past day and running it through two JavaScript tests on two computers, it's conclusively faster than the previous stable version of Chrome.

In addition to being faster, the new Chrome now has a full screen mode.

(Credit: Screenshot by Seth Rosenblatt/CNET)

The two computers I used were a Windows Vista Service Pack 1 desktop with a Pentium 4 processor running at 3.00 GHz and 2 GB of RAM, and a Windows XP Pro Service Pack 3 laptop with a Core Duo T9400 processor running at 2.53 GHz and 3 GB of RAM. Chrome was benchmarked by the Webkit test, SunSpider, and the JavaScript-only sections of the Mozilla test Dromaeo. Chrome was tested with no other tabs open and no other programs running on the computer.

When testing SunSpider, Chrome v1.0.154.65 scored 919.2ms on the laptop, and 1864.2ms on the desktop. Chrome v2.0.172.28 scored 583.6ms on the laptop, and 1323.4ms on the desktop. The laptop score was 36.6 percent faster, and the desktop was 29 percent faster.

Running both versions of Chrome through Dromaeo came up with similar results. Keeping in mind that the higher number is better for Dromaeo's tests, the older Chrome scored an overall 113.25 runs/s on the laptop. The newer one hit 139.90 runs/s, an improvement of 23.5 percent. The desktop results were the inverse of the laptop's.

Where the SunSpider results showed greater gains for the new Chrome on the laptop, the Dromaeo desktop tests showed an improvement of 33.8 percent. Chrome v1.0.154.65 hit 146.63 runs/s while v2.0.172.28 scored 196.29 runs/s.

Also new: Users can set forms to autofill in the Options menu (foreground, right), and selectively remove thumbnails on the New Tab landing page (background, left).

(Credit: Screenshot by Seth Rosenblatt/CNET)

Actual results will vary based on your hardware and other program running simultaneously, but it's irrefutable that the new version of Chrome, with its updates to the WebKit rendering engine and Google's V8 JavaScript engine, is significantly faster than its predecessor. I strongly recommend that you upgrade if you've been using Chrome for script-intensive Web apps.

Also new in this version of Chrome is the F11 hot key to toggle full screen mode, which drops all hints of the browser frame except for the scroll bars--but only if they're appearing on that site in standard mode. There's also a new form autofill under Options in the Tools menu, and users can selectively remove thumbnails from the New Tab landing page.

With a back-to-the-future technology called JavaFX to be launched Thursday, Sun Microsystems hopes to attract a new class of developer while building a much-needed new revenue source.

JavaFX 1.0 returns to the sales pitch that Sun used during Java's launch more than 13 years ago: a foundation for software on a wide variety of computing "clients" such as desktop computers or mobile phones. JavaFX builds on current Java technology but adds two major pieces.

Sun CEO Jonathan Schwartz

(Credit: Stephen Shankland/CNET Networks)

First is a new software foundation designed to run so-called rich Internet applications--network-enabled programs with lush user interfaces. Second is a new programming language called JavaFX Script that's intended to be easier to use than traditional Java.

But JavaFX faces some steep challenges. Chief among them: while Sun spent much of its energy adapting Java for servers, a host of other software options for building rich Internet applications sprang up. Java paved the way in 1995, but now it's got to take on Adobe Systems' Flash and AIR, Microsoft's newer arrival, Silverlight, and JavaScript and its more sophisticated cousin Ajax.

"This is the essence of the Hail Mary," said Illuminata analyst Jonathan Eunice. "I would like to think there's a role for Java on the client, but it's very late."

But Chief Executive Jonathan Schwartz, despite Sun's dropping revenue, low stock price, and large new layoff, believes that JavaFX will overcome its obstacles.

"Don't confuse relevance for stock price," he said, pointing to Java's widespread adoption among developers and students, and to Sun's expansion into newer open-source areas such as the MySQL database software. "We're more relevant today than any other software developer on the face of the Earth."

And while JavaFX may not be widely discussed today as a rich Internet application foundation, "I promise you that will change in the next 60 to 90 days," Schwartz said.

Java's stronghold
With help from allies such as IBM, Sun built Java into a powerful technology for server software tasks such as running stock-trading applications. And it gained a stronghold on millions of mobile phones.

But it missed out on desktop computers, where it was notoriously slow to load, and lost out chiefly to JavaScript built into the browser and to Adobe's Flash plug-in. On mobile phones, Java has suffered from a sprawling set of optional features that undermine its "write once, run anywhere" promise to developers. Different phones essentially have different varieties of Java.

JavaFX is designed to address both of those issues. First, a more unified "runtime" foundation spans PCs and mobile phones, though the latter version isn't expected until the first half of 2009. And this time, Sun supplies it in an unmodified form so phone manufacturers won't splinter it into incompatible versions.

Sun is promoting JavaFX as a good way to write rich Internet applications. (Click to enlarge.)

(Credit: Sun Microsystems)

"We're making our binaries available" to mobile-phone makers "so we can unify the Java platform implementations," said Schwartz, who expects rapid adoption. "We're starting with a couple billion handsets in the marketplace and swimming downstream."

The business case
Sun also will charge those handset makers a per-unit royalty for JavaFX, and right now, Sun needs all the revenue it can get. Although Java has been good for Sun's brand, it hasn't been a cash cow, but here again, Schwartz has high expectations.

"Java has become the single most profitable software product at Sun, growing more rapidly than any other," he said, pointing to billings (PDF) that Sun charged customers in the company's most recent quarter.

In raw revenue, though, its 18 percent growth to $34 million lagged that of MySQL, for which billings grew 50 percent annually to $37 million. And Sun's hardware revenue still is an order of magnitude larger than its software revenue.

Schwartz also believes that JavaFX has more appeal to content providers because it comes from a neutral technology supplier, not a potential rival.

"The problem with browsers, when viewed as the default mechanism for delivering content for the Web, is that browsers have become hostile territory," Schwartz argued. "Internet Explorer is owned by Microsoft. Firefox is owned by Google, at this point. Chrome is owned by Google. Beyond that, with maybe (the exception) of Safari, which is owned by Apple, there is no safe route to distribute your content into the marketplace."

Perhaps JavaFX's open-source nature reduces the threat that Sun could hold a business partner hostage. But when it comes to safety, there also are risks to betting on new technology.

Distributing JavaFX is another challenge. The auto-update feature in desktop Java will take care of PCs, starting next year--though people will be able to actively download it sooner in coming days--but for mobile phones, Sun relies on handset makers and electronics companies such as TV makers to build it in.

EZ coding
JavaFX is designed to be easier to use too. The JavaFX Script origins lie in a project originally called F3, short for the "form follows function" slogan from the Bauhaus school of architectural thought.

"You can use Java to solve difficult problems," but doing so often requires sophisticated programming, said Eric Klein, Sun's vice president of Java marketing. And regular Java isn't well-adapted to creating basic, media-rich applications that run in browsers. Building a simple media player application in Java takes 100 lines of code, but JavaFX Script can do it in 20 or 30 lines, he said.

"The goal was to make (the) power of Java accessible to an entirely new class of developers," Klein said. "For existing developers, it would accelerate how fast they could get things done."

JavaFX also comes with a slick feature, the ability to move running applications out of the browser and onto the desktop--and back, if desired. Essentially, they can change their nature and abilities according to where they're housed. And the same application also can run on JavaFX Mobile, holding the promise for programmers that they won't have to endlessly rewrite the same applications for different media.

"You can build a media player, run it in a browser, then you can simply drag it out of your browser onto your desktop, and it becomes a desktop application automatically. It's the same code, the same application," said Jeet Kaul, Sun's senior vice president of Java engineering.

Moving to the desktop, the application could take advantage of new screen real estate that affords a better user interface and new permissions for tasks such as writing files to a hard drive, Kaul said.

Again, though, incumbent players have an edge. JavaScript has matured as an interface language, Flash has many loyal developer fans, and Silverlight is powerful, Eunice said.

"I'm invariably skeptical that a language you don't know yet is going to be easier than all the languages you do know," Eunice said. And unlike with earlier chapters of the Java saga, "Sun has to do all this heavy lifting on its own."

Wikimedia CTO Brion Vibber

(Credit: Rafe Needleman / CNET)

What is the significance of Sun Microsystems' announcement Wednesday that Wikimedia is buying truckloads of Sun servers? It's that the Wikimedia team, which runs Wikipedia, Wikinews, Wikibooks, and other sites, is gearing up to change the nature of the reference services. Wikipedia, in particular, is going to get a lot more visual. Limits on the size of upload files will be increased to 100MB. Video--hosted by Wikimedia--will soon be part of the mix.

With the more aggressive support for media files will come, eventually, new ways to edit those media. Kaltura has been working with Wikimedia to create an online video editor that supports wikipedia concepts: users will be able to edit others' videos, and everyone will be able to see the edit history.

Wikimedia is also considering building an online photo editor into the service, so users will be able to do the same things with photos that they do with text--enhance, clarify, and revert the last user's edits. Failing that, Wikimedia CTO Brion Vibber told me Wednesday, Wikipedia users may soon get a way to view the revisions that people make offline to photos by flipping through previous versions of the images.

The one holdup I can see with Wikimedia's newish love of media files is its fetish for open-source technologies. Vibber told me the new video support is being designed first to run in Firefox 3.1, because this open-source browser has native support for the open-source Ogg Theora codec. I'm sure that will make for a good experience in Firefox, but philosophy aside, I'd like to see even support for all browsers, not just Firefox.

Currently, all of Wikipedia, including the photos and audio, fits in less than 5 terabytes of storage. The text alone is less 500 MB compressed. With the new servers and the new media editing services, Vibber expects Wikipedia to be using 10 TB to 15 TB by the end of 2009.

O'Reilly Media's Tim O'Reilly said he had his phone on the wrong Twitter setting to receive audience Twitter questions during his Web 2.0 Expo keynote interview with Sun CEO Jonathan Schwartz.

(Credit: Twitter)

Update: This story now reflects Tim O'Reilly's mea culpa for not asking audience questions sent in via Twitter.

SAN FRANCISCO--After all the hooplah over interactivity--or lack thereof--during keynote speeches at the South by Southwest Interactive conference in March, I've been thinking a lot about how conferences can incorporate the backchannel.

That's why I was pleasantly surprised to see Tim O'Reilly, who runs O'Reilly Media, which is the co-organizer of the Web 2.0 Expo here, invite the audience for his keynote conversation with Sun Microsystems CEO Jonathan Schwartz to Twitter him questions to ask Schwartz.

He pointed out that the dynamic of the room didn't allow for audience members to stand at microphones to ask questions, so instead, he said, people could send him questions via his Twitter account (@timoreilly), which he would then be able to check on his mobile phone.

This can be a nice way to bring in the audience and it can showcase the ways that audience members can now interact with the people onstage at conferences and symposiums.

As I wrote in my earlier story, it is becoming increasingly clear that audiences want to be able to have a say in what is being discussed onstage, and technologies like Twitter, Meebo, instant message, and others make it more likely that not only will those in the audience be able to talk silently among themselves, but also to communicate with the speakers.

O'Reilly Media's Tim O'Reilly encouraged the audience at his keynote interview with Sun CEO Jonathan Schwartz to Twitter him questions, but didn't follow up by asking any of them.

(Credit: Daniel Terdiman/CNET News.com)

But, sadly, O'Reilly never actually checked his phone to see if there were any Twittered questions from the audience--either those in the room or those following from outside--and therefore wasted this golden opportunity to bring the backchannel into the conversation.

There's nothing wrong, per se, with not incorporating the backchannel in such a keynote address, of course. At Web 2.0 Expo, the keynote addresses are shorter than at many conferences, and so I can easily see why keeping the discussion solely between those onstage makes perfect sense. And in fairness to him, there were really only a few minutes left in the time for the talk when he posed the opportunity.

But it still felt like a little bit of a slap in the face for O'Reilly to offer the audience the ability to Twitter questions and then not follow through.

Afterwards, I Twittered O'Reilly to ask him why he hadn't asked any of the questions I'm sure he must have gotten. He hasn't responded yet. But if I hear from him, I'll update this blog.

At just before 3 pm pacific Friday, O'Reilly Twittered publicly that he had accidentally had his cell phone set to the wrong Twitter setting and that it was only showing replies from Twitter users he was actively following.

It's good of him to address the issue and explain why he didn't follow through on his offer to the audience.

SAN FRANCISCO--Sun Chief Executive Jonathan Schwartz rightly gets credit for pioneering the corporate blog as a tool to reach customers, employees, and others. But pretty soon the novelty of his methods will wear off, he predicted.

Sun CEO Jonathan Schwartz speaks at the Web 2.0 Expo

(Credit: Corinne Schulze/CNET Networks)

"At some point the word 'blogging' will be anachronistic," Schwartz said at the Web 2.0 Expo here in San Francisco. "I communicate."

And he predicted, in effect, that the rest of the executive world will catch up. "Historically, communication took place by being a celebrity CEO who met with heads of state, and got the local media to cover it," he said in an on-stage interview with O'Reily Media chief Tim O'Reilly. "You got the message out in an inefficient and environmentally irresponsible way. Then the Internet came round and gave you a way to reach the entire planet."

In Sun's effort to recover some of the glory and profitability it had in the first Internet bubble, the company has embraced open-source software, adopted servers based on Intel and AMD's x86 processors, and switched CEOs.

One thing hasn't changed, though, from the Scott McNealy era to the Schwartz era: the company tries to be provocative. It's cheaper than advertising, and blogs are just a new way to accomplish the goal.

"If you say undifferentiated things that are expected, then you shouldn't expect anyone to care," Schwartz said, asked about what he meant when he said, "Controversy was...not a byproduct of the strategy--it was the strategy," on his blog earlier this month when discussing his company's open-source processor strategy.

Blogs and open-source software are complementary, Schwartz added.

"Sun makes money by selling the innovations in data centers," but that's a hard market to reach, he said. "Free software and free ideas are the best way to reach the marketplace."

Update: I added comment from Google.

Painful flashbacks are beginning to torment those of us who lived through the Java wars between Sun Microsystems and Microsoft that began 10 years ago.

Earlier this week, Google released programming tools for its Android mobile-phone software project that shun the existing Java standard-setting process in favor of a Google-specific variety. Sun responded on Wednesday by expressing concern that Google's Android project could fragment Java into incompatible versions.

"Anything that creates a more diverse or fractured platform is not in (developers') best interests," said Rich Green, executive vice president of Sun's software work, speaking to reporters at the Oracle OpenWorld conference in San Francisco. "The feedback from developers is, 'Help us fix this.'"

He said Sun wants to work with Google to nip any problems in the bud. "We're really interested in working with Google to make sure developers don't end up with a fractured environment. We're reaching out to Google and assuming they'll be reaching out to us to ensure these platforms and APIs will be compatible so deployment on a wide variety of platforms will be possible," Green said.

Google unrepentant
Google didn't adopt a terribly conciliatory tone in its response, arguing that when it comes to Java fragmentation, Android is the solution, not the problem.

"Google and the other members of the Open Handset Alliance are working to help solve fragmentation and supporting the developer community by creating Android, a mobile platform that responds to the needs of the developers, has the backing of industry leaders, and will be available as open source under a nonrestrictive license," Google said in a statement.

And asked whether it would discuss the issue with Sun, Google said, "We're talking with industry leaders around the world about Android and the Open Handset Alliance but we're not commenting on any of those discussions."

On Monday, Google indicated that it expects fellow members of the Open Handset Alliance phones who are working on the Android phones to help keep its variation of Java familiar to programmers.

Java today is governed by the Java Community Process, in which a number of companies vote on which features to accept into the Java system and create standard mechanisms called application programming interfaces (APIs) by which Java software can use those features. The extent to which Android will or must conform to these APIs is not clear.

For those who need a refresher on the Microsoft history here, the software company licensed Java back in the 1990s, way before it became open-source software. However, Microsoft added some features to Java that meant that it could work differently on Windows machines, a move Sun saw as undermining the "write once, run anywhere" promise of the technology.

And the beat goes on.

Sun Microsystems' xVM virtualization efforts is getting louder and louder.

Sun's xVM is its Solaris-based version of the Xen open-source hypervisor project. Sun's xVM aims to allow x86 servers to run multiple operating systems simultaneously on a single computer, in a move toward increased flexibility and data center efficiency. xVM also relies on Sun's Solaris operating system, while Xen primarily uses Linux.

Last September, Sun named its Xen-based virtualization project xVM. That effort attracted some attention on Sun's blog.

Then in October, Sun executives expanded the scope and geography of that message, talking to the press from London to San Francisco. The topic: Sun xVM Server and Sun xVM Ops Center, designed to serve as soup-to-nuts software for virtualizing and managing the datacenter.

Earlier this month, Sun released OpenSolaris Developer Preview for download. The beta included such features as xVM and is scheduled for release in the spring as OpenSolaris 3/08.

Sun's chief executive, Jonathan Schwartz, is scheduled to discuss Sun's virtualization strategy and roadmap at Oracle OpenWorld on Wednesday, as well as some of its partners for the free, open-source datacenter virtualization and management platform. MySQL and Quest Software, for example, have signed aboard as xVM partners.

Providing further context around Schwartz's pending keynote was Rich Green, Sun's executive vice president of software.

"Virtualization is just beginning, as evidenced by VMware's roll out in the market," Green said. "We look at VM as a wide range of technologies. In the next five years, it's hard to imagine any IT company that would deploy their architecture without VM."

He added that the challenge is how a guest operating system views the data center. And the hypervisor is the window through which applications view the entire data center.

"The key is getting the most out of the data center," Green noted.