Below is a list of writings from Ancient India!
Rig Veda (c. 1500–1200 BCE)
Upanishads (c. 800 - 300 BCE)
Mahabharata (c. 400 BCE - 400 CE)
Ramayana (c. 500 BCE - 200 CE)
Bhagavad Gita (c. 200 BCE - 200 CE)
Kautilya
Arthashastra (c. 3rd Century BCE)
Manu
Manusmrti (Laws of Manu) (c. 200 BCE - 200 CE)
Buddhist Tripitaka (Pali Canon) (c. 1st Century BCE)
Bharata Muni
Natyasastra (c. 200 BCE - 200 CE)
Kalidasa
Abhijnanasakuntalam (c. 4th - 5th Century CE)