FORTUNE -- San Francisco's Moscone Center is no stranger to developer conferences. It's been home to the annual geekfests hosted by Apple (AAPL) and Google (GOOG) for several years. But this summer, Microsoft (MSFT) decided to join the fun, bringing its three-day event to San Francisco. (Last year's conference was at--you guessed it--the company's Redmond campus.) All three companies are vying for developers' love--they run competing platforms, like Apple's iOS, Google's Android and Microsoft's Windows Phone on the mobile front. But their approach to developer conferences is also different (one similarity: parties are a must). As Microsoft winds down with its extravaganza, here's a side-by-side look at the Bay Area's dueling developer events.
When: June 26-28
Highlights: Windows 8.1, an improved update of its PC operating system, was announced. Also, a Facebook app is finally coming to Windows.
Oprah moment: Free Acer Iconia W3 tablet and Microsoft Surface Pro
Party: DJ Boogie was in the house at Wednesday's night's VIP event (he used a song-mixing Windows 8 app called edjing for his performance).
When: May 15-17
Highlights: Google Play All Music Access, Google's (long-winded) foray into music streaming and updates to Chrome and Google search. Also, a Larry Page sighting--the elusive CEO took questions from the audience.
Oprah moment: Chromebook Pixels for everyone
Party: let's just say Billy Idol was there
Apple Worldwide Developer Conference
When: June 10-14
Key announcement: the latest version of Apple's mobile operating system, iOS 7, featuring a "radical" redesign. Also, Apple marketing exec Phil Schiller used the word "ass" (as in, "Can't innovate, my ass!").
Oprah moment: None
Party: Developers rocked out to Vampire Weekend, iPhones in hand.
iOS7? Refreshed MacBook Airs? Here's what Apple is revealing at this year's developer's conference in California.
FORTUNE -- Can Apple (AAPL) continue to "wow"? We'll find out.
This year's San Francisco-based WWDC already promises to be bigger than most. The company's executive bench, from Tim Cook to Senior VP of Internet Software and Services Eddy Cue, are here, as are Al Gore, Yahoo CEO Marissa Mayer, super angel Ron Conway, Path CEO Dave MOREJP Mangalindan, Writer - Jun 10, 2013 12:58 PM ET
Free for those who couldn't make it to San Francisco or didn't sign up before they sold out
The 5,200 developers who rushed to register before the $1,599 tickets sold out, flew to San Francisco to be there in person, and stood in lines that snaked around three city blocks say that the conversations that took place in the hallways between sessions were half the reason to attend the Apple (AAPL) MOREPhilip Elmer-DeWitt - Jun 24, 2011 11:44 AM ET
In a rare 1997 Q&A, Steve Jobs talks about killing products, taking lumps and saying "no"
I don't known where he found it, but a YouTube user who calls himself superapple4ever has put his hands on a video of Steve Jobs doing a Q&A at the end of Apple's (AAPL) 1997 Worldwide Developers Conference -- his first after he returned to the company.
The full video, posted here, runs for more than MOREPhilip Elmer-DeWitt - Jun 17, 2011 12:37 PM ET
Average post WWDC loss: 5.4%. Average gain from the previous year: 56.8%
There was the usual gnashing of teeth on the Apple (AAPL) investor boards when the company's share price dropped $6.18 ($1.8%) Monday, the day of Steve Jobs' iCloud keynote.
Adding insult to injury, the stock continued to fall three out of the next four days. It closed Friday at $325.90, its lowest price since Dec. 2010, down 5.7% for the MOREPhilip Elmer-DeWitt - Jun 11, 2011 12:40 PM ET
Apple's pre-announcements -- of Mac OS X Lion, iOS 5 and iCloud -- have only made things worse
I've never see the Apple (AAPL) cognoscenti quite so confused. They're all in town for the Worldwide Developers Conference that opens Monday at San Francisco's Moscone West -- the first one since 2007 that doesn't feature a new iPhone. And without that shiny piece of hardware to anchor their thoughts, they seem to MOREPhilip Elmer-DeWitt - Jun 6, 2011 3:29 AM ET
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* The L.A. Times is reporting new details on Apple's iCloud service, which will likely be announced this Monday at the company's annual Worldwide Developers Conference (WWDC). The cloud-based service, which will at the very least allow users to stream music to computer browsers and iOS devices, may MOREJP Mangalindan, Writer - Jun 3, 2011 10:04 AM ET
They are the reason Apple's shares leaped out of the box at the opening bell Tuesday.
The key words in the press release Apple (AAPL) issued Tuesday morning were not OS X Lion, iOS 5, or iCloud -- the three components of what the company is billing as the "next generation software."
As important as the operating systems and services to be unveiled next week at Apple's annual Worldwide Developers Conference may MOREPhilip Elmer-DeWitt - May 31, 2011 10:49 AM ET
Ten hours after registration opened for WWDC 2011, all 5,000 seats were taken
Media from around the world descend on Apple's Worldwide Developers Conference in San Francisco every June for a chance to see a Steve Jobs keynote and to find out what shiny new objects he has up his sleeve.
This year, however, according to several reporters with excellent sources within the company, there may be no shiny new objects. And MOREPhilip Elmer-DeWitt - Mar 29, 2011 7:18 AM ET
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