The 21st century technological advancement has revolutionized instructional classroom practices. Lecturers deal with tech-savvy learners, and thus, need to be taught by utilizing updated and technological-based platforms for a more meaningful learning engagement. The study was aimed at investigating the impact of LoiLooNote digital graphic organizer (digital GO) -- a software mapping tool, on students' oral presentation skills across four components: clarity, content, fluency and coherence, and content and on their dispositions towards critical thinking (CT). Utilizing an exploratory case study using mixed-method type of research, the current study involved 30 intact group of students in a public university in Thailand. The data were obtained from students' oral presentation performance, interviews and California Critical Thinking Dispositions Inventory (CCTDI) results. The result indicated that using the digital GO might improve the students' oral presentation performance in terms of the aforesaid components. Interestingly, all the seven CCTDI sub-scales reveal a significant relationship with their oral presentation task performance indicating that they have become more disposed to open-mindedness, truth-seeking, CT self-confidence, analyticity, systematicity, inquisitiveness and maturity. Qualitative findings disclose that the participants have positively welcomed the use of LoiLooNote digital graphic organizer on their oral presentation tasks processes and made them become more inclined to critical thinking. Findings of the study suggest that the use of LoilooNote digital GO increases EFL learners' oral presentation performance, enhances critical thinking dispositions and provides a foundation for designing curriculum in oral presentation.