From Hindupedia, the Hindu Encyclopedia
By Swami Harshananda
Āgamas are a special class of religious literature devoted to the propagation of the various sects centered round the sect-deities. They are generally classified into three groups:
It deals with the three deities Śiva, Śakti and Viṣṇu. The Śāktāgamas are also called Tantras.
- The Concise Encyclopedia of Hinduism, Swami Harshananda, Ram Krishna Math, Bangalore