Royal Dutch Shell

Royal Dutch Shell plc (LSE: RDSA, RDSB), commonly known as Shell, is a global oil and gas company headquartered in The Hague, Netherlands and with its registered office in London, United Kingdom. It is the fifth-largest company in the world (and the second-largest energy company) according to a composite measure by Forbes magazine and one of the six oil and gas "supermajors". It is vertically integrated and is active in every area of the oil and gas industry, including exploration and production, refining, distribution and marketing, petrochemicals, power generation and trading. It also has major renewable energy activities, including in biofuels, hydrogen, solar and wind power.

Shell has operations in over 90 countries, produces around 3.1 million barrels of oil equivalent per day and has 44,000 service stations worldwide. Shell Oil Company, its subsidiary in the United States, is one of its largest businesses.

Shell has a primary listing on the London Stock Exchange and is a constituent of the FTSE 100 Index. As of December 2011, it was the largest company on the FTSE, with a market capitalisation of £149.2 billion. It has secondary listings on Euronext Amsterdam and the New York Stock Exchange.
Source:Wikipedia

ExxonMobil

Exxon Mobil Corporation (NYSE: XOM) or ExxonMobil, is an American multinational oil and gas corporation. It is a direct descendant of John D. Rockefeller's Standard Oil company, and was formed on November 30, 1999, by the merger of Exxon and Mobil. Its headquarters are in Irving, Texas. It is affiliated with Imperial Oil which operates in Canada
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ExxonMobil is one of the largest publicly traded companies by market capitalization in the world, having been ranked either No.1 or No. 2 for the past 5 years. Exxon Mobil's reserves were 72 billion oil-equivalent barrels at the end of 2007 and, at then (2007) rates of production, are expected to last over 14 years. With 37 oil refineries in 21 countries constituting a combined daily refining capacity of 6.3 million barrels (1,000,000 m3), Exxon Mobil is the largest refiner in the world, a title that was also associated with Standard Oil since its incorporation in 1870.

ExxonMobil is the largest of the six oil supermajors[9] with daily production of 3.921 million BOE (barrels of oil equivalent). In 2008, this was approximately 3% of world production, which is less than several of the largest state-owned petroleum companies.[10] When ranked by oil and gas reserves it is 14th in the world with less than 1% of the total.
Source:Wikipedia

Walmart

Wal-Mart Stores, Inc. (NYSE: WMT), branded as Walmart since 2008 and Wal-Mart before then, is an American multinational retailer corporation that runs chains of large discount department stores and warehouse stores. The company is the world's 18th largest public corporation, according to the Forbes Global 2000 list, and the largest public corporation when ranked by revenue. It is also the biggest private employer in the world with over 2 million employees, and is the largest retailer in the world.

The company was founded by Sam Walton in 1962, incorporated on October 31, 1969, and publicly traded on the New York Stock Exchange in 1972. It is headquartered in Bentonville, Arkansas. Walmart is also the largest grocery retailer in the United States. In 2009, it generated 51% of its US$258 billion sales in the U.S. from grocery business. It also owns and operates the Sam's Club retail warehouses in North America.

Walmart has 8,500 stores in 15 countries, under 55 different names. The company operates under its own name in the United States, including the 50 states and Puerto Rico. It operates in Mexico as Walmex, in the United Kingdom as Asda, in Japan as Seiyu, and in India as Best Price. It has wholly owned operations in Argentina, Brazil, and Canada. Walmart's investments outside North America have had mixed results: its operations in the United Kingdom, South America and China are highly successful, whereas ventures in Germany and South Korea were unsuccessful.
Source:Wikipedia

Tata Group

Tata Group is an Indian multinational conglomerate company headquartered in Mumbai, Maharashtra, India. It is one of the largest conglomerates in India by market capitalization and revenue. It has interests in communications and information technology, engineering, materials, services, energy, consumer products and chemicals. Tata Group has operations in more than 80 countries across six continents and its companies export products and services to 80 nations. It comprises 114 companies and subsidiaries in eight business sectors, 27 of which are publicly listed. 65.8% of the ownership of Tata Group is held in charitable trusts. Companies which form a major part of the group include Tata Steel (including Tata Steel Europe), Tata Motors (including Jaguar and Land Rover), Tata Consultancy Services, Tata Technologies, Tata Tea (including Tetley), Tata Chemicals, Titan Industries, Tata Power, Tata Communications, Tata Sons, Tata Teleservices and the Taj Hotels.

The group takes the name of its founder, Jamsedji Tata, a member of whose family has almost invariably been the chairman of the group. The current chairman of the Tata group is Ratan Tata, who took over from J. R. D. Tata in 1991 and is one of the major international business figures in the age of globality. The company is currently in its fifth generation of family stewardship. TATA Group's 114 companies are held by its main company Tata Sons and the main owner of Tata Sons are various charitable organisations developed and run by Tata Group. Out of which JRD Tata Trust & Sir Ratan Tata Trust are the main holders. About 65% ownership of Tata Sons which is the key holding company of the other 114 Tata Group Company is held by various charitable organisations.

The 2009, annual survey by the Reputation Institute ranked Tata Group as the 11th most reputable company in the world. The survey included 600 global companies. The Tata Group has helped establish and finance numerous quality research, educational and cultural institutes in India. The group was awarded the Carnegie Medal of Philanthropy in 2007 in recognition of its long history of philanthropic activities. Tata gets more than 2/3 of its revenue from outside India. In June 2011, based on market value Tata Group has become India's wealthiest group with $98.7 billion
Source:Wikipedia

Reliance Industries

Reliance Industries Limited (RIL) (BSE: 500325, NSE: RELIANCE, LSE: RIGD) is an Indian conglomerate company headquartered in Mumbai,India. The company operates through three business segments: petrochemicals, refining, and oil and gas, other segment of the company includes textile, retail business, special economic zone (SEZ) development and telecom/broadband business. RIL is the largest publicly traded company in India by market capitalization and second-largest public corporation in India when ranked by revenue. The company is listed on Fortune Global 500 and Forbes Global 2000.
Source:Wikipedia

Yahoo

Yahoo! Inc. (NASDAQ: YHOO) is an American multinational internet corporation headquartered in Sunnyvale, California, United States. The company is perhaps best known for its web portal, search engine (Yahoo! Search), Yahoo! Directory, Yahoo! Mail, Yahoo! News, Yahoo! Groups, Yahoo! Answers, advertising, online mapping (Yahoo! Maps), video sharing (Yahoo! Video), and social media websites and services. It is one of the largest websites in the United States.

Yahoo! inclusive was founded by Jerry Yang and David Filo in January 1994 and was incorporated on March 1, 1995. On January 13, 2009, Yahoo! appointed Carol Bartz, former executive chairman of Autodesk, as its new chief executive officer and a member of the board of directors. On September 6, 2011, Bartz was removed from her position at Yahoo! by chairman Roy Bostock and CFO Tim Morse was named as Interim CEO of the company.

According to news sources roughly 700 million people visit Yahoo websites every month Yahoo! itself claims it attracts "more than half a billion consumers every month in more than 30 languages".
Source:Wikipedia

Google

Google Inc. (NASDAQ: GOOG) is an American multinational internet and software corporation specialized in internet search, cloud computing, and advertising technologies. Google hosts and develops a number of Internet-based services and products, and generates profit primarily from advertising through its AdWords program. The company was founded by Larry Page and Sergey Brin, often dubbed the "Google Guys", while the two were attending Stanford University as PhD candidates.

It was first incorporated as a privately held company on September 4, 1998, and its initial public offering followed on August 19, 2004. At that time Larry Page, Sergey Brin, and Eric Schmidt agreed to work together at Google for twenty years, until the year 2024. The company's mission statement from the outset was "to organize the world's information and make it universally accessible and useful", and the company's unofficial slogan – coined by Google engineer Amit Patel and supported by Paul Buchheit – is "Don't be evil". In 2006, the company moved to its current headquarters in Mountain View, California.

Google's rapid growth since its incorporation has triggered a chain of products, acquisitions, and partnerships beyond the company's core web search engine. The company offers online productivity software, such as the Gmail email service, the Google Docs office suite, and the Google+ social networking service. Google's products extend to the desktop as well, with applications such as the Google Chrome web browser, the Picasa photo organizing and editing software, and the Google Talk instant messaging application. Google leads the development of the Android mobile operating system, as well as the Google Chrome OS browser-only operating system, found on specialized laptops called Chromebooks.

Google has been estimated to run over one million servers in data centers around the world, and process over one billion search requests and about twenty-four petabytes of user-generated data every day.Alexa lists the main U.S.-focused google.com site as the Internet's most visited website, and numerous international Google sites (google.co.in is the most visited site in India, google.co.uk in the U.K, etc.) are in the top hundred, as are several other Google-owned sites such as YouTube (Alexa:3), Blogger and its related subdomain blogspot.com (Alexa:7), and Orkut. Google also ranks number two in the BrandZ brand equity database. The dominant market position of Google's services has led to criticism of the company over issues including privacy, copyright, and censorship.
Source:Wikipedia