Vedas, scripture (second and first mil. BC)
Upanishads, scripture (c. 900-500 BC)
Kanada (Vaisheshika Sutra), philosophy (c. 500-100 BC)
Mahabharata, epic (c. 400 BC and after)
Ramayana of Valmiki, epic (c. 200 BC)
Bhagavad Gita, religion/philosophy/scripture (c. 100 BC-100 AD)
Institutes of Manu, law (c. 200 BC-200 AD)
Patanjali (Yoga Sutras), philosophy/practice (c. 300)
The Samkhyakarika of Ishvara Krishna, philosophy (c. 350)
Vedanta-sutras, philosophy (c. 780-820)
Theravada Buddhism:
The Tipitaka, scripture (c. 500 BC-100 AD)
The Dhammapada, scripture (c. 300 BC)
The Mahasatipatthana Sutta (Discourse on the Foundations of Mindfulness), scripture (c. 20 BC)
The Milindapanha (The Questions of King Milinda), scripture (c. 100)
Mahayana Buddhism:
Lotus Sutra, scripture (c. 50 BC-150 AD)
The Prajnaparamita (Heart and Diamond Sutras), scripture (c. 100 BC-400 AD)
The Srimaladevisimhanada (The Lion's Roar of King Srimala), scripture (c. 200-300)
The Sukhavativyuha Sutras, scripture (c. 100-400)
Nagarjuna (The Philosophy of the Middle Way), philosophy (c.150-250)
The Lankavatara Sutra, scripture (c. 350-400)
The Bodyicaryavatara of Shantideva (Entering the Path of Enlightenment), scripture (c. 650)
Kalidasa, drama (c. 400)
The Little Clay Cart of Shudraka, romance (c. 400)
Ānandavardhana (Dhvanyāloka, or "A Light on Suggestion"), philosophy (c. 820-890)
The Gitagovinda of Jayadeva, devotional poetry (c. 1100-1200)
Pancatantra, fables (c. 1200)
Rabindranath Tagore, poetry and drama (1861-1941)
Mohandas Gandhi (Autobiography), reformer (1869-1948)
[A Sourcebook in Indian Philosophy, edited by Sarvepalli Radhakrishnan and Charles A. Moore, Princeton University Press]