10 super successful co-founders and why their partnerships worked

Company: Google

Year Founded:1998

How their partnership was formed: Larry and Sergey met at Stanford’s PhD program in 1995, but they did not instantly become friends.

During a campus tour for doctoral students, Brin was Page’s guide-- and they bickered the entire time. Despite their quarrel, the two found themselves working on a research project together. Their paper, “The Anatomy of a Large-Scale Hypertextual Web Search Engine,” became the basis for Google.

Why their partnership works: Sergey and Larry have similar technology backgrounds; they fell in love with computers at an early age and had university professors for parents. They bonded over their passion for data mining and grew to have similar visions for their company.

Page and Brin made the joint decision to bring Eric Schmidt on board, and to instill a laid-back atmosphere at the Googleplex. They may have been born on opposite sides of the world (Brin from Russia and Page from Michigan), but Sergey and Larry are cut from the same cloth.

Sources: BusinessWeek, Google Corporate

Company: Apple Inc.

Year Founded:1976

How their partnership was formed: The two Steves became friends at a summer job in 1970. Woz was busy building a computer, and Steve Jobs saw the potential to sell it.

In a 2006 interview with the Seattle Times, Woz explained, "I was just doing something I was very good at, and the thing that I was good at turned out to be the thing that was going to change the world...Steve [Jobs] was much more further-thinking. When I designed good things, sometimes he'd say, "We can sell this." And we did. He was thinking about how you build a company, maybe even then he was thinking, "How do you change the world?"

Why their partnership works: A master of analytics, Woz admits that he never once thought to sell his original computer model. That was all Jobs. Woz's technical skills paired with Jobs' business foresight makes the two an ultimate business match. And it is a relationship that has withstood decades, fame and fortune. According to Woz, the two remained friends. Woz said they would "talk every once in a while, and they have never had a real argument."

Source: The Seattle Times

Company: Twitter

Year Founded: 2006

How their partnership was formed: Evan Williams had been working at Blogger when it was sold to Google. Under Google's new reign, Williams hired Stone.

"We started out as rivals but became great friends," Stone explained to AllThingsD. "We really respected each other. When Evan left [Google for Odeo.com] I was like, 'What?? You're Leaving me?' So I followed him."

The pair was approached by Jack Dorsey, an Odeo engineer with an idea. This discussion developed into Twitter.

Why their partnership works: Having both spent a decade in the blogging business, Stone and Williams are equally knowledgeable about the platform. Williams realized Twitter's potential and entrusted Biz with the micro-blogging site as a side project. Mutual respect, camaraderie and ambition have encouraged the two to stick together and achieve business success.

Source: All Things Digital

Company: Hewlett-Packard

Year Founded: 1939

How their partnership was formed: Bill and Dave were classmates in Stanford's engineering program. Following graduation, Hewlett and Packard went on a two-week camping trip.

Spending two weeks in the woods with the same person would drive most people insane. Instead, Hewlett and Packard became close friends.

Shortly after, with the encouragement of Stanford professor Fred Terman, they started HP.

Why their partnership worked: Hewlett and Packard were best friends with similar strengths and managements styles; they complimented each other. As managers, Bill and Dave were openly involved in projects. They created a social, supportive work environment that contradicted the times. It was their innovative work ethic that enabled HP, its employees, and their business partnership to thrive.

Sources: HP Corporate, Lemelson-MIT program

Company: Ben & Jerry's

Year Founded: 1978

How their partnership was formed: Like Gates and Allen, Ben Cohen and Jerry Greenfield were childhood friends. Born four days apart, they met during high school gym class in 1963. They quickly became inseparable and even double-dated.

Sharing a love of food, the pair took a correspondence course in ice-cream making in 1977. After mastering the course, the twosome made a $12,000 investment and opened their first ice cream shop, Ben & Jerry's.

Why their partnership works: Ben and Jerry were able to turn their friendship into a successful business thanks to a joint passion for food and a desire to do more than just profit.

The pair are adamant about giving back to the community, and this resonates with their customers. Greenfield has said, "We measured our success not just by how much money we made, but by how much we contributed to the community. It was a two-part bottom line."

Sources: Inc.com, Entrepreneur.com, Evancarmichael.com

Company: eBay

Year Founded: 1995

How their partnership was formed: Skoll and Omidyar were casual acquaintances when Omidyar built the code for eBay.

Skoll, a recent Stanford MBA graduate, initially scoffed at the auction website. "First he told me it was a stupid idea," Omidyar wrote for Time International, " and then he agreed to come on board."

Skoll was the first employee on the payroll and was hired to write Omidyar's business plan. As eBay began to take off, so did their business relationship. The pair led the auction site to an IPO just 3 years later.

Why their partnership works: Skoll and Omidyar share democratic values which has strengthened their business and their partnership. According to the LA Times, "They didn't talk about customers; they talked about 'the community.'"

The two were also charitable. "Shutting the community out of EBay's upcoming IPO—a practical necessity—seemed ungrateful," the LA Times reports. "So they decided that EBay would endow a charitable foundation with pre-IPO stock and share its wealth that way."

Loyalty to customers and giving back to the community are values that have made the pair billionaires.

*Although they were business partners, eBay was solely founded by Pierre Omidyar. As Pierre's first employee, Skoll worked very closely with him and partnered on many aspects of the business, but he was not a co-founder.

Sources: Los Angeles Times, Notable Biographies, Omidyar Network

Company: Intel

Year Founded: 1968

How their partnership was formed: Moore and Noyce were rebels. They were two of the "traitorous eight," a group that left Shockley Semiconductor Laboratory to begin their own rival company. Shortly after, Moore and Noyce united to create their own business, Intel.

Why their partnership works: Noyce, co-inventor of the microchip, was the visionary and inspiration for Intel. Moore was avid in technology. The two talents joined forces to create a laid-back company built on cutting-edge innovation.

Sources: Silicon Valley Historical, Entrepreneur.com

Company: Procter and Gamble

Year Founded: 1837

How their partnership was formed: Most in-laws can't stand each other. For William Procter and James Gamble, marrying the Noris sisters led to one heck of a business partnership. Both were entrepreneurs, a candle and soap maker respectively, but had never met. Once they became related, their father-in-law coaxed them into creating a company.

Why their partnership worked: Family and business values brought them together. Procter and Gamble helped each other create mass quantities of their products which led to a distribution deal with the U.S. army. From there, the two reaped the benefits of their partnership.

Source: PG Corporate

Company: Yahoo!

Year Founded: 1995

How their partnership was formed: Like Larry Page and Sergey Brin, Yahoo's founders met at Stanford’s PhD program in 1994.

According to Entrepreneur.com, the pair first worked together on a project designing computer chips. It was as dull as it sounds, so Yang and Filo skipped class to surf the web. Eventually, they began keeping tabs of their favorite sites. They organized them under topics, and their lists morphed into Yahoo!

Why their partnership worked: A mutual passion for the web united Yang and Filo. They found themselves spending 20 hours a day scouring websites for fun. Eventually Stanford punted them off campus because their "lists" continually crashed the campus' system. It was then that Yang and Filo realized they had a business on their hands, decided to stick together, and received funding from Sequoia Capital.

Yang told Entrepreneur.com, "Both Dave and I realize that we want to be contributors to Yahoo! The inevitable fact is that we want the company to get to the point where it perhaps doesn’t need us…where it’s on its own. At that point, it will have grown enough for us to say we’re successful.”

Sources: Entrepreneur.com, Yahoo! Corporate