Within the non-dual tantric traditions centered on Śiva as supreme Consciousness, several principal streams can be discerned, each with its own emphasis yet deeply interwoven with the others. Foremost among these is Kashmir Śaivism, often referred to as Trika, which contemplates reality through a threefold structure—Śiva, Śakti, and the bound soul—and elaborates a sophisticated vision of dynamic consciousness and the tattvas. Within this Kashmiri milieu, the Pratyabhijñā or “Recognition” school provides the philosophical backbone, teaching that liberation consists in recognizing one’s identity with Śiva that has never truly been lost. Closely related is the Spanda current, which highlights the subtle “vibration” or pulsation of awareness as the living heart of all manifestation, and is treated as an integral dimension of Kashmir Śaivism rather than a wholly separate path. Together, these currents form a non-dual vision in which every experience, when rightly understood, is a doorway to the recognition of Śiva-consciousness.

Alongside Trika stand other distinctive yet overlapping Shaiva tantric lineages. The Krama tradition, sometimes counted within the Kashmiri synthesis yet retaining its own identity, contemplates a sequential unfolding (krama) of consciousness, often through a series of Kālī forms or goddesses, and places strong emphasis on time, transformation, and the progressive deepening of realization. The Kaula or Kula lineages, which are clan-based and initiatory, stress the centrality of Śakti as Śiva’s dynamic power and make extensive use of ritual, the body, and the senses as vehicles of non-dual realization; these Kaula streams appear in northern, eastern, and southern regions, frequently interfacing with Śākta traditions while preserving a Śaiva non-dual metaphysics. In various parts of India, especially in eastern and southern regions, non-dual Śaiva–Śākta syntheses and Kaula-influenced currents arise, sometimes within or alongside more dualistic systems, yet they maintain the same fundamental orientation: Śiva as absolute Consciousness, inseparable from Śakti, realized through initiatory practice and contemplative insight.