06/06/2011 09:42 am ET Updated Aug 06, 2011

Apple, Google, Twitter And More: 10 Super Successful Cofounders And Why Their Partnerships Worked

Not all entrepreneurs need co-founders, but many successful companies -- including Apple, eBay, and Twitter -- were built by multiple leaders with productive relationships.

How did these individuals find their business counterparts? And what made their combined skill-sets a recipe for success?

Not surprisingly, many were long-time friends, classmates, or relatives. Others, however, did not get along initially. Some still are not amicable, despite their joint achievements.

There is a common trend: the most well-rounded pairs recognized their individual limitations and respected what the other could bring to a partnership. Many of these duos have gone on to run some of the most successful businesses of our time.

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