Ponniyin selvan

Ponniyin Selvan (Tamil: பொன்னியின் செல்வன், English: The Son of Ponni) is a 2400 page 20th-century Tamil historical novel written by Kalki Krishnamurthy. Written in 5 volumes, this narrates the story of Arulmozhivarman (later crowned as Rajaraja Chola), one of the kings of the Chola Dynasty during the 10th-11th century CE period.
Ponniyin Selvan is widely regarded as one of the greatest novels in Tamil. It deals with the fortunes of the Chola empire during the 10th century. It was serialised in the Tamil periodical Kalki. The serialisation went on for three and a half years and every week its publication was awaited with great interest.
Considering the huge popularity of the book and the author, this novel was nationalized by the Government of Tamil Nadu and is available as an open source for anyone to publish.