Chakavian
Chakavian in its actual use is the least spoken Serbo-Croatian dialect, being spoken only by 12% Croats. It is now mostly reduced in southwestern Croatia along the eastern Adriatic: Adriatic islands, and sporadically in the mainland coast, with rare inland enclaves up to central Croatia, and minor enclaves in Austria and Montenegro. All areas of old contacts with Romance languages.
List of revived languages
The Dalmatian language was spoken in Dalmatia, a coastal region of Croatia, in the Middle Ages. Its last known native speaker was Antonio Tuone Udaina, who died on June 10, 1898, as the result of an explosion. The Dalmatian language is being revived by pro-autonomist Dalmatian activists, and today is estimated that there are about 20 fluent Dalmatian speakers and more than one hundred people with some knowledge of the language.