A problem that still persists in Collaborative Writing is the lack of use of relevant technology to counter lessened interaction and learning participations in developing writing skills effectively. To offset these difficulties, this study examines the use of Edmodo on students' collaborative writing. This study used a quasi-experimental study of 56 students, grade 10, Gresik, Indonesia, with two assigned classes of experimental and the control group, each containing of 28 students. The results of this study reveal that there is a significant influence of Edmodo on Collaborative writing, evidenced by the results of sig. (2- tailed) is 0,000 (lower than 0.05). Edmodo has proven to be a dependable means when merged with a Collaborative Writing strategy, and has also been attested to reassure student participation and interaction. Suggestions and further research basis are also presented, especially to innovative scholars as treasured opportunities for accompanying enquiry to pay more courtesy to the progress of Collaborative Writing which is increasingly unlocked to always re-join hearty users' wants.