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.
Šokac
Šokac ("Šokački jezik") was a language listed in Austro-Hungarian censuses. Population censuses performed in Austria-Hungary recorded the native language of the citizens, whereby Šokac was declared as native language to one part of the population, presumably members of the Šokci ethnic group. According to the 1910 census, the speakers of Šokac were recorded in the Bačka-Bodrog County, in the municipalities of Apatin, Baja, Odžaci, and Palanka. Although, not very different from Croatian or Serbian Shtokavian speech, Šokac could be identified along with Slavonian subdialect of the "old-Štokavian" speech. Today, most of the members of the Šokci community declare themselves as Croats in the census, and their language as Croatian or Serbian.