Microsoft urges developers to make Windows 8 apps

Days after launching Windows 8, Microsoft Corp is mounting a strong campaign to win over the software developers it needs to kick-start its new operating system.

A lack of apps is Microsoft's Achilles heel as it attempts to catch Apple and Google in the rush toward mobile computing.

Windows 8, the new Surface tablet and a range of Windows-based phones - all unveiled in the past week - are designed to close that gap, but the world's largest software company still needs to convince developers to recreate the thriving 'ecosystem' that made PCs so successful.

"Please go out and write lots of applications," Microsoft CEO Steve Ballmer pleaded with 2000 developers on Tuesday, kicking off an annual, four-day meeting at its campus near Seattle.

The event, called 'Build,' is the equivalent of Apple's Worldwide Developer Conference and Google's I/O event.

Microsoft gave each paying attendee one of its Surface tablets and 100 gigabytes of free space on its SkyDrive online storage service. On top of that, handset partner Nokia threw in a free Lumia 920 smartphone running Windows Phone 8.

The unprecedentedly generous give-away signals the intent of what Microsoft openly calls "evangelism." Most developers at the meeting, who paid up to $US2000 to attend, are already converted to the Windows religion. But this year there is a feeling that Microsoft can re-establish itself as a relevant platform for developers.

"The sessions are overflowing. Everybody wants to learn," said Greg Lutz, product manager at development tools company ComponentOne, who is attending the conference.

"The Surface is really exciting. It's been interesting to see people that would normally be critics of Microsoft surprised to see how good it is."

Microsoft recognises it needs apps to flesh out its new online Windows Store and make Windows 8 machines more attractive to users, said Russ Whitman, chief strategy officer at Ratio Interactive, a design agency that helps companies create apps.

"The catalog (of apps) is where they are weak, there's no doubt," he said. "But if Microsoft stays focused on quality not quantity, they can win."

When Windows 8 launched on Friday, some major content providers had prominent apps in the Windows store, such as Netflix Inc, the New York Times and Rovio's Angry Birds Space. But big names such as Facebook and Twitter were missing.

Twitter moved to rectify that on Tuesday, announcing that a native Windows app would be rolled out "in the months ahead." Dropbox, a fast-growing cloud storage service, also announced it would soon have a Windows app, as did online payment firm PayPal and sports network ESPN.

But Facebook, which now has more than 1 billion users, has not yet made public any plans for a Windows app, despite the fact Microsoft is a minor shareholder.

And Microsoft still has to overcome indifference from many developers who do not see demand from users or simply do not have the resources to build Windows apps alongside iOS and Android.

To get more developers on board, Microsoft is spending this week demonstrating how it is making it easier to develop apps for Windows and get them into the real world.

A key part of that is a new set of tools tying in its Azure cloud service, which allows Windows apps to easily harness data stored in remote servers.

Microsoft's best argument to developers is the sheer size of the Windows user base.

Microsoft sold 4 million upgrades to Windows 8 in its first four days, a mere fraction of the 670 million or so machines running Windows 7. Ballmer said there would be 400 million new devices running Windows next year, including PCs, tablets and phones, and the company would be marketing heavily to consumers.

One Wall Street analyst said developers may even be tempted to switch back to Microsoft after working with Apple's iOS platform.

"There does seem to be some excitement about the new operating system and many of the new devices that are coming to market," said Jason Maynard, an analyst at Wells Fargo Securities. "We have heard some developers talk about 're-Microsofting' and moving from their Macs for app development."