Tata Consultancy Services (TCS) is the largest Indian multinational IT services company, founded in 1968. Infosys is the second largest, founded in 1981 and headquartered in Bengaluru. Wipro is another major player, incorporated in 1945 and shifting to IT in the 1970s-80s. HCL Technologies is the fourth largest Indian IT company, emerging from research division of HCL in 1991. The document provides details on the founding, leadership, services, and industries of each of these top Indian multinational companies.