Overmind (Sri Aurobindo)
Overmind, according to Sri Aurobindo, is the plane of Gods. Overmental plane is the highest consciousness one can achieve without transcending the mental system. Beyond overmind are the planes of Supermind or unity-consciousness.
A detailed description of the Overmind is provided in Book I ch.28, and Book II ch.26, of Sri Aurobindo's philosophical opus The Life Divine.