This study investigates the effects of the CMC applications on the ESL/EFL writing anxiety. This is a descriptive study using a mixed-method that adopted both quantitative and qualitative approaches. Three instruments were employed to answer the research questions of the current study which are Second Language Writing Anxiety Inventory (SLWAI), Semi-structured Interview, and Documents Observation. The respondents consisted of twenty eight post-graduate ESL/EFL students who enrolled in the elective course of Computer Application in ESOL (SKBI6133) at the Faculty of Social Sciences and Humanities, School of English Language Studies, National University of Malaysia (UKM). The findings showed a significant change in their attitudes toward writing after they had engaged in writing process approach and CMC applications in the course. In addition, the respondents perceived that there was a positive effect of on their writing performance and improvement on their writing anxiety level particularly through the use of CMC applications.