2. Wipro:

Wipro was earlier known as Western India Products.It was originally set up as a producer of vegetable ghee, vanaspati, refined oils including salad oil in Amalner, Maharashtra under the trade names of Kisan, Sunflower and Camel. It still has kept a sunflower as its company’s logo to reflect the original production. Now it has emerged as the multinational IT service providing company headquartered in the silicon valley of India Bangalore. Apart from IT services it also provides consulting and outsourcing services. It is also interested in consumer care, lighting, engineering and health care businesses. As of 2012, it has total revenue of 7.30 billion and is the employer of 135,920 employees.

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3. Infosys:

Infosys was earlier known as Infosys technologies. It was established in the year 1981 by Narayan Murthy, Nandan Nilekani, N.S. Raghavan, S. Gopalkrishnan, S.D. Shibulal, K.Dinesh, and Ashok Arora. The company is a provider of business consulting, enginerring, technology and outsourcing services. It is another company which is headquartered in Bangalore. It has its branch in 30 countries worldwide and development centers in India, United States, China, Australia, UK, Japan, Canada and other countries. Its total revenue is 6.99 billion as of 2012 and it consists of 151,151 employees as per this year.