The article analyzes the effective electronic resources used in teaching Ukrainian as a second language. The authors highlight informational, educational, and controlling resources. Using electronic resources in the Ukrainian language teaching and learning process facilitates the development of an active vocabulary and critical thinking of the international students, lexical and linguistic competence, intensive study of phonetics, spelling, grammatical features of the language, and the diversity of the educational process. The significant effect of these resources in learning a foreign language is related to digitization and how it has affected the modern young generation, who cannot imagine their lives without varieties of gadgets. Mobile applications, which can be downloaded to any device, are designed for students to learn the lexical minimum, develop the correct pronunciation, improve their spelling and vocabulary, and practice making sentences. At the same time, the use of electronic resources when studying Ukrainian as a second language requires the students to be thoroughly self-organized and motivated. They are programmed only to reproduce a certain lexical or grammatical field, have no student-teacher or student-student feedback, aimed at checking the level of knowledge assimilation at a certain stage. Electronic resources should be used, under the control of a teacher, as a simulator for mastering the lexical minimum and grammar. These resources cannot replace communicative situations and speech cases, during which students actively use vocabulary and master speech constructions, and thus acquire lexical competence.