Map­ka is an in­ter­ac­tive map-based ap­pli­ca­tion for work­ing with spo­ken di­alec­tal cor­po­ra. It fea­tures var­i­ous func­tions in­clud­ing a pre­sen­ta­tion of char­ac­ter­is­tic fea­tures of Czech di­alec­tal ar­eas il­lus­trat­ed by au­then­tic speak­er­s’ ut­ter­ances.