It is the initiator of the umbrella organization for rationalism and humanism, Federation of Indian Rationalist Associations[citation needed].The Rationalist Movement in Kerala had started with the Sahodara Sangham (Fraternity Forum), formed by K. Ayyappan on May 29, 1917, at Cherai, in Ernakulam.

This fraternity forum propagated 'Mishra Bhojanam' (feasting without caste discrimination), which was unthinkable as well as very revolutionary at the time.

Yukthirekha, a monthly in Malayalam, is the official magazine of Kerala Yukthivadi Sangham, which has been in circulation since 1983[citation needed].

Ayyappan organized the Sahodara Sangham (The Brotherhood Association), and started two magazines “Sahodaran” and “Yukthivadi”.

[1][2] In 1935 a Yukthivadi Sangham was registered at Kochi, M. C. Joseph as secretary and Panampilly Govinda Menon as treasurer.

Velayudhan Pilla, U.Kalanadhan, Pavanan, Johnson Eyeroor, Padmanabhan Pallath, Gangan Azikode, Rajagopal Vakathanam, Dhanuvachapuram Sukumaran, Sabhari Girish, Adv.

The organization publishes a monthly magazine, Yukthirekha in Malayalam and a quarterly The Secular Humanist in English.