Hatharatnavali is an important treatise on Hathayoga and Tantra written by Srinivasa Bhatta Mahayogendra (1625-1695 A.D.) but not popular as Hatha Pradipika of Atmarama.(1534-1634 A.D.). The Salient features of the text include clear conception of Yoga, description of Mahayoga, Astakarmas includes varieties of Gajakarni, 84 Asanas, 9 Pramayamas, elaboration on Mudras and therapeutical effects etc. It was also described how different karmas kriyas purify specific chakaras is a specialty of this text.
While describing the Yogic and Tantric techniques, the author also refers to the old traditions like Vasistha, Yajnavlakya, Suta, Dattatreya, Charpati, Mats yendra and Gorakha etc, and gives new information like sankete and techniques, which are not commonly known in Hatha Pradipika, Gherenda Samhita and Shiva Samshita.