Serbian is the standardized variety of the Serbo-Croatian language mainly used by Serbs. It is the official language of Serbia, the territory of Kosovo, and one of the three official languages of Bosnia and Herzegovina. In addition, it is a recognized minority language in Montenegro where it is spoken by the relative majority of the population, as well as in Croatia, Macedonia, Romania, Hungary, Slovakia, and the Czech Republic.
Serbian is practically the only European standard language whose speakers are fully functionally digraphic, using both Cyrillic and Latin alphabets.
All the World Languages in One Visualization: A World of Languages.