Mark Zuckerberg and Dropbox CEO Have Been 'Close Friends' For Years. Here Are 7 Other Top Tech Exec Friendships.Silicon Valley might be competitive, but it also appears to be a breeding ground for friendships among its famous execs.

Bill Gates and Warren Buffett. Elon Musk and Larry Ellison. Jeff Bezos and Barry Diller.

What do all these high-profile pairings have in common? They're all close friendships within the world of tech.

Silicon Valley may be known for its competitive spirit, but it's also fostered several years-long friendships among some of its most famous executives. Microsoft cofounder Bill Gates and investor Warren Buffett, for example, have been buddiesfor nearly 30 years. And Larry Ellison and Marc Benioffhave been friends for decades, even though their respective enterprise software companies are technically rivals.

Tesla and SpaceX CEO Elon Musk has several close pals in tech, including friends he's defended online or taken for Tesla test drives.

Here's a closer look at some of the friendships among tech CEOs.

Elon Musk and Jack Dorsey

While it's not clear if Tesla and SpaceX CEO Elon Musk and Twitter and Square CEO Jack Dorsey actually hang out in real life, theydoseem to have a solid virtual friendship.

As far back as 2016, Dorsey said Musk was"a really good model"for how to use Twitter. More recently, Dorsey said in an interview that Musk ishis favorite Twitter follow,to whichMusk responded, "Thanks Jack, Twitter rocks!"

Then, in January, Dorsey and Muskspoke over video chatin front of Twitter employees and Musk gave Dorsey advice on how to improve the platform.

In March, as Dorsey facesa possible ousterat the hands of an activist hedge fund, Musk publicly tweeted his support of the CEO.

"Just want to say that I support @jack as Twitter CEO,"Musk tweeted. "He has a good <3."

Jeff Bezos and Barry Diller

Amazon CEO Jeff Bezos and IAC Chairman Barry Diller appear to have been friends for years.

In January 2016, Dillercorrectly predictedthat Bezos would become the richest person in the world.

And in the last few years, as Bezos has gone throughchanges in his personal life, he's been spotted hanging out with Diller and his wife, designer Diane von Furstenberg, more often. Diller and von Furstenberg have reportedly attendedmultiplepartieshosted by Bezos, and Bezos and his girlfriend, Lauren Sanchez, havesailed aboard von Furstenberg's yacht. The two couples were also reportedly spottedexploring Venice together.

Larry Ellison and Steve Jobs

Oracle founder Larry Ellison and late Apple CEO Steve Jobs were friends for 25 years before Jobs' death in 2011.

Ellison and Jobs used to be neighbors in Woodside, California, and the pair often went hiking together. It was during one of those hikes that Ellison helped Jobs plot how to regain control of Apple after he was ousted — Ellison even suggested buying Apple himself and installing Jobs as CEO.

It was Jobs who came up with the idea that Apple should acquire his company, Next, instead. When Ellison questioned how the pair would make money, Jobs said to him, "Larry, this is why it's so important that I'm your friend. You don'tneedany more money," Ellisonsaid in a commencement speechin 2016.

Ellison said hespent time with Jobs in his final days散步,短和他一块s he became weaker. Ellisongave a eulogyat Jobs' funeral.

Elon Musk, Larry Page and Sergey Brin

Elon Musk has been friends with the cofounders of Google for a long time.

In the early days of Musk's tenure at the electric car maker, he took Brin and Page on a test drive. Unfortunately, a software bug prevented the car from going any faster than 10 miles per hour, Muskrecounted at a company shareholdermeeting in 2016. Despite "the world's worst demo," however, the duo ended up investing in Tesla anyway, Musk said.

Over the years, Musk and Page especially have become close friends — Musk even sometimessleeps at Page's housewhen he's in town, and Page once said he'drather leave his money to Muskthan give it away to charity.

Brin, Page, and Musk also reportedly used tohang out in a Google-owned apartmentand brainstorm ideas.

"It's fun for the three of us [including Google cofounder Sergey Brin] to talk about kind of crazy things, and we find stuff that eventually turns out to be real," Page told Ashlee Vance, whowrote a 2015 biographyabout Musk.

Larry Ellison and Marc Benioff

Ellison and Salesforce CEO Marc Benioff met when Benioff began working at Oracle when he was 23. He was a star early on, earning a"rookie of the year" awardthat same year and becoming Oracle's youngest VP by age 26. He spent13 years at Oracle, during which he became a trusted lieutenant to Ellison.

The pair became such close friends that rumors swirled about their relationship's backstory — people wondered if they were related, or if Ellison had been Benioff's childhood babysitter. Ellison and Benioff took trips together, sailed on Ellison's yacht, andwent on double dates.

Benioff began working on Salesforce with Ellison's blessing, and Ellison became an investor,putting in $2 millionearly on.

The duo haspubliclyfeudedover the years — includingwhen Benioff fired Ellisonfrom Salesforce's board — but Benioff has also described Ellison as his mentor.

"There is no one I've learned more from than Larry Ellison," Benioffsaid in 2013.

Bill Gates and Warren Buffett

Berkshire Hathaway CEO Warren Buffett and Microsoft cofounder Bill Gates met in 1991 when Buffett was invited over to Gates' mother's house. Neither man was very interested in meeting the other, but theyended up hitting it off. Soon after, Gates asked Buffett for a business book recommendation, and Buffettloaned him his copy of "Business Adventures" by John Brookes — Gates still has it today.

Since then, the duo has done everything from play table tennis together to participate in Berkshire Hathaway'sannual newspaper tosscompetition. And Gates, his wife Melinda, and Buffettlaunched the Giving Pledgetogether in 2010, vowing to give away the majority of their wealth in their lifetimes or in their wills.

While Buffett owns a major stake in Apple, he's said thathe'll never invest in Microsoftdue to his friendship with Gates.

Larry Ellison and Elon Musk

Ellison and Musk appear to be two of the friendliest CEOs in tech, if their relationships with Benioff and Jobs, and Page, Brin, and Dorsey are any indication. So it's not much of a surprise that the two moguls are "very close" friends with each other, too.

Back in 2018, when Ellison wasnamed to Tesla's board of directions, he highlighted his relationship with Musk.

"I think Tesla has a lot of upside," Ellisonsaid at the time. "I am not sure how many people know, but I'm very close friends with Elon Musk, and I'm a big investor in Tesla."

It makes sense that Ellison and Musk would get along well, as they're two of the most colorful personalities in tech. Ellison ownsan entire $300 million island in Hawaii, likes to race yachts, and doesn't mindtrash-talking his competitors. Musk spends his money onrare cars,has hadmultiple high-profile relationships, and is often outspoken on Twitter.

马克·扎克伯格和休斯顿

Dropbox CEO Drew Houston and Facebook CEO Mark Zuckerberg haveapparently been friends for years, with the former often turning to the latterfor advice.

"[Zuckerberg's] given me a lot of advice just on company scaling, how do you organize people, how do you set up these systems," Houstontold Bloomberg in 2015.

That same year,a Fast Company profile on Dropboxdescribed Houston as a "close friend" of Zuckerberg's. The pair has been photographed together everywhere fromHouston's birthday partyat a ping-pong club to the prestigious Allen & Co. conference in Sun Valley, Idaho.

This past February, Houston wasappointed to Facebook's board of directors.

"Drew brings valuable perspective to our board as a leader of a technology company with services used by millions of people and businesses," Zuckerberg said in a statement at the time. "He thinks deeply about where technology is going and how to build a culture that delivers services that always work well."