who was responsible for developing the gurumukhi script
Gurmukhi script Gurmukhi (IPA: [ɡʊɾmʊkʰi]; Gurmukhi: ਗੁਰਮੁਖੀ) is a Sikh script modified, standardized and used by the second Sikh Guru, Guru Angad (1563–1606).[1][3][4] It is one of three scripts used for the Punjabi language, the other being the Perso-Arabic Shahmukhi script used by Punjabi Muslims, while Punjabi Hindus use either Nagari script or the Gurmukhi.[3][4]