We are happy to release the Sindhi Resource Grammar. It is 5th Indo-Iranian language added in the GF resource grammar library (Others are Urdu, Punjabi, Persian, and Nepali). The development took almost 6 months, and was developed as a Master thesis project. Sindhi belongs to the Indo-Aryan branch of the Indo-Iranian family. It is widely spoken in Pakistan and India. In Pakistan it is the official language of Sindh (province of Pakistan), and in India it one of the scheduled languages officially recognized by federal government of India. There are more than 22 million native Sindhi speakers. In Pakistan Sindhi is written in Perso-Arabic script from right-to-left, while in India it is written in Devanagari script from left-to-right. Rich morphology, verb-compounding, relatively free word-order are the major characteristics of Sindhi.