Ramanujacharya, a prominent philosopher and theologian of the Vishishtadvaita (qualified non-dualism) school of Vedanta, authored the following:
• Vedarthasangraha: A critical summary of the teachings of the Upanishads.
• Shribhashya: A detailed commentary on the Brahmasutras, establishing the principles of Vishishtadvaita Vedanta.
The other works mentioned, Siddhitraya and Vedantaparibhasha, are not authored by Ramanujacharya but by other scholars.