Shaktism
Shaktas worship the divine Mother Shakti, in her many forms. These forms include Kali, Durga, Laxmi, and Saraswati.
Shaktism is one of the oldest forms of the Hindu religion (records date back to the Indus valley civilization). The passage of thousands of years has yielded variations in doctrine, and a plurality of Hindu philosophies has emerged. The Shaivism and Shakta forms are in fact inseparable, as is the description of Shiva from that of Shakti/Sati/Parvati. Vaishanvism also has a connection with Shakta philosophy because Goddess Durga is called Narayani.
Read more about this topic: Hindu Sects