Introduction Flutt?r, th? op?n-sourc? UI softwar? d?v?lopm?nt kit cr?at?d by Googl?, has b?com? a l?ading fram?work for building applications across multipl? platforms. Initially d?sign?d for mobil? apps, Flutt?r now supports th? cr?ation of w?b and d?sktop applications, ?nabling d?v?lop?rs to craft cross-platform solutions with a singl? cod?bas