Eduardo Saverin, who co-founded Facebook with Mark Zuckerberg celebrates his birthday today. Although Zuckerberg went on to achieve massive popularity the knowledge of Saverin's role in the making of the social media giant remains lesser known. Read below to know more...

Eduardo Saverin worked together with Mark Mark Zuckerberg to launch Facebook in 2004, in order to fill the gap of a dedicated social networking website for Harvard students. He held the role of chief financial officer and business manager.

Eduardo Saverin
Eduardo Saverin

Saverin and Facebook got embroiled in a legal tussle following an exclusive email from Zuckerberg detailing how he cut Saverin from Facebook and diluted his stake, which was made public on May 15, 2012 by a major business magazine. The lawsuit by Facebook and Saverin's coutersuit were both settled out of court with the social media company recognising him as co-founder of Facebook. Eduardo Saverin signed a non-disclosure contract after the settlement.

He courted controversy in September 2011 for renouncing his American citizenship because of his "interest in working and living in Singapore" where he has been since 2009. The move was seen as a method of tax evasion since he avoided an estimated $700 million in capital gains taxes. Saverin has a net worth of $7.2 billion, according to Forbes and owns 53 million Facebook shares as of 2015. He has also invested in early-stage startups such as Qwiki and Jumio.

Saverin wasn't alone. A look at two other may be the not-so-famous halves, whose contribution to the companies they co-founded in un-parallel... 

Steve Wozniak: Known as 'The other Steve', Stephen Gary "Steve" Wozniak also known as "Woz", single-handedly developed the 1976 Apple I, the computer that launched Apple. Friend and Apple co-founder Steve Jobs, oversaw the development of its unusual case and Rod Holt developed the unique power supply. He helped Jobs with creation of a circuit board for the popular arcade video game 'Breakout' in 1973.

An undated image of Apple co-founder Steve Wozniak. Pic/YouTube
An undated image of Apple co-founder Steve Wozniak. Pic/YouTube

Wozniak resigned from his job at Hewlett-Packard and became the vice president in charge of research and development at Apple after it was founded on April 1, 1976. Following the Apple 1, Wozniak also designed the Apple II, the first personal computer that had the ability to display color graphics, and BASIC programming language built-in. It became one of the first highly successful mass-produced personal computers.

Steve Wozniak was severely injured in an airplane crash on February 7, 1981 and temporarily left Apple as a means to recover. He returned in 1983 but desired to be just an engineer and a motivational factor for the Apple workforce rather than being part of the upper management. Wozniak left Apple again in 1985 and sold most of his stock since he felt, the company had "been going in the wrong direction for the last five years."

Paul Allen: The man who co-founded Microsoft along with Bill Gates, Allen estimated to be the 45th richest person in the world, with an estimated wealth of $17.7 billion as of March 2016.

Paul Allen

Paul Allen has been instrumental in his and friend Bill Gates' financial success when in 1980 he spearheaded a deal for Microsoft to purchase a Quick and Dirty Operating System (QDOS) which was written by Tim Paterson who, at the time, was employed at Seattle Computer Products. This enabled Microsoft to secure a lucrative contract to supply the DOS that would eventually run on IBM's PC line. He also recounted to have conceived the name, 'Micro-soft' during an 1995 interview to a popular magazine.

Allen has been successfully treated for Hodgkin's lymphoma. He had contracted the disease in 1982. Following his return from cancer treatment he began to distance himself from Microsoft and officially resigned from his position on the Microsoft Board of Directors in November 2000 but was asked to consult as a senior strategy advisor to the company's executives and still owns a reported 100 million shares.