Adi Shankaracharya, also known as Shankara or Shankar, was a renowned Indian philosopher and theologian who lived in the 8th century. He is considered to be one of the most influential figures in the development of Advaita Vedanta, a school of Hindu philosophy that emphasizes the concept of non-dualism. His teachings had a profound impact not only on Advaita Vedanta but also on other Indian philosophies.

First and foremost, Shankaracharya's teachings played a significant role in shaping the development of Advaita Vedanta. He firmly believed in the concept of Advaita, which means "non-dual" or "not two." According to Shankara, the ultimate reality is Brahman, the absolute, infinite, and eternal consciousness. He argued that the individual self (Atman) is not separate from Brahman but is, in fact, one with it. This idea of non-dualism was a departure from the traditional Vedic teachings and had a profound impact on the development of Advaita Vedanta.

Shankaracharya's teachings also influenced the development of other Indian philosophies, particularly those that were in opposition to Advaita Vedanta. For example, the Samkhya school of philosophy, which believes in the duality of the individual self and the material world, was challenged by Shankara's concept of non-dualism. His teachings led to a re-evaluation of the Samkhya philosophy and eventually led to its decline.

Furthermore, Shankaracharya's teachings had a significant impact on the development of the Bhakti movement in India. The Bhakti movement emphasized the path of devotion and worship of a personal deity as a means to achieve liberation. Shankara's teachings of Advaita Vedanta, which emphasized the oneness of the individual self and Brahman, challenged the traditional beliefs of the Bhakti movement. However, his teachings also had a unifying effect, as he emphasized that the worship of a personal deity is also a path to realizing the ultimate reality of Brahman.

Shankaracharya's teachings also influenced the development of the Yoga school of philosophy. Yoga, as a spiritual practice, aims to unite the individual self with the universal consciousness. Shankara's teachings of Advaita Vedanta provided a philosophical foundation for the practice of Yoga and helped to integrate it with Hinduism.

In conclusion, Adi Shankaracharya's teachings had a significant influence on the development of other Indian philosophies. His concept of non-dualism challenged traditional beliefs and led to a re-evaluation of other schools of thought. His teachings also helped to unify different philosophies and practices, ultimately contributing to the rich and diverse spiritual landscape of India.