Iymperumkapiyangal

The five Tamil epics, composed by Buddhists and Jainas.

Silappatikaram – Ilango Adigal
Manimekalai – Chithalai Sathanar (continuation of Silappatikaram)
Civaka Cintamani – Tirutakkatevar
Kuntalakesi – Natakutanar
Valaiyapati – Author unknown

Read about Iymperumkapiyangal here
http://tamilyouth.ca/iymperumkaapiyangal-the-five-great-epics-of-tamil-literature/