Penguin Books India is the largest English language trade publisher in India. Penguin Books was established in 1985, and it began the publishing in October 1987 with seven titles. The company is headquartered at New Delhi, the national capital of India. At present Penguin India publishes over 200 titles every year in addition to its active backlist of over 750 titles.

HarperCollins Publishers is one of the best English-language publishers in the world. It is a subsidiary of News Corporation and is headquartered at New York. Harper Collins was founded by brothers James Harper and John Harper in 1817. In 1987, the famous News Corporation acquired Harper Collins. Later in 1990, News Corporation acquired the British publisher William Collins& Sons, and since then it has been known as an international publishing house. William Collins & Sons was into publishing of different versions of Bibles, atlases, dictionaries, and reissued classics. It had also owned the publishing rights of many legendary authors such as H. G. Wells, Agatha Christie, J. R. R. Tolkien, and C. S. Lewis.

The Encyclopedia Britannica is the oldest general encyclopedia published in English language by Encyclopedia Britannica Inc., a private company owned by Jacqui Safra, a Swiss billionaire and famous actor.

Parragon is known as the largest promotional/ value publisher in the world. It is spread over the seven continents and all major countries, and so it imparts a wide spectrum of knowledge to different readers with different requirements by offering more than 1000 titles a year.