
Sarva-siddhanta Sangraha

Sarva-darsana-siddhanta Sangraha, or simply Sarva-Siddhānta-Saṅgrahaḥ (Sanskrit: ) is a work by Adi Shankaracharya written in 7th century AD, which sketches eleven major systems of thought of different Indian schools of philosophy during that period in the Indian sub-continent.
Chapters.
The eleven systems of philosophy covered in the work are listed below.
Non-Vedic schools.
These unorthodox schools fall under Nāstika, who reject Vedas as an authoritative system.
Vedic schools.
The Āstika systems described here consider Vedas as a reliable and authoritative source of knowledge.
Related works.
Adi Shankaracharya is also said to have authored Sarva Vedānta Siddhānta Sāra Saṅgraha (A Summary of the Essence of the Established Conclusions from All the Upaniṣads), also known as The Quintessence of Vedanta. This work is later said to have inspired Madhvacharya to write Sarva-darsana Sangraha, a compendium of 16 Hindu schools of religion during the 12th century AD.