• All India Forward Bloc: Founded by Subhash Chandra Bose in 1939. It emerged as a nationalist political bloc within the Indian National Congress. Bose's radical approach and emphasis on complete independence led to the formation of this party after his differences with Mahatma Gandhi.
• Arya Samaj: Founded by Dayananda Sarasvati in 1875. This Hindu reform movement aimed at the revival of Vedic principles and challenged the prevailing religious superstitions and practices in 19th-century India. It played a significant role in the socio-religious reform movements.
• The Congress Socialist Party: Founded in 1934, with prominent figures like Jai Prakash Narayan, Acharya Narendra Dev, and Ram Manohar Lohia. It was formed within the Indian National Congress with the aim of promoting socialist ideas and achieving complete independence through socialist means.
• The Indian National Liberal Federation: Formed in 1918, following a split in the Indian National Congress. Its key leaders included Surendra Nath Banerjee. The moderates, who favoured constitutional methods and gradual self-rule, formed this organization in contrast to the more radical factions.