The last of the languages before Modern Egyptian was probably one of the most known languages. Coptic is the last stage of the Ancient Egyptian language. It was written using the Greek alphabet, with some additional characters for sounds unknown to Greek, and was mainly used by the Egyptian Christians. Next to the writing, Coptic was also influenced by Greek in its vocabulary. It was gradually replaced as a spoken language by Arabic from the Arab conquest of Egypt in 640 AD on and is now only used as a liturgical language (such as Latin in Europe was during the Middle-Ages).
The language used by modern Egyptians is Arabic