Purpose: The main objective of this study is to identify and Comparison the writer features of content management systems of conferences, at the national and international level.Method logy: In order has been used of the methods of analyzing system (web-based survey), oral interview (interview whit some of experts, including authors and jury proceedings in international conferences, manager and secretary of the conference systems, professor of information science and management), seeing the conference website and various parts of the system, an available movies and slides, documentary and library studies methods including study guides, educational menus and all existing evidence, empirical and practical study. Finally for measurig the available facilities in selected samples and comparing them was used from descriptive method (Descriptive statistics, frequency tables, bar and radar charts whit using SPSS and Excel software).The population of the study was conferences management system in national and international level. The samples of the study consisted of three national conference management system (Yekta web, Negar and Adak systems) and three international system (ASME, Conftool and OCS systems).Findings: The findings show that in the among international system, Conftool and ASME systems in terms of what the writer has goned the highest score. In the national systems, Negar system of Fraznet corporate in the part of the writer of the Congress was the highest score in terms of facilities.Results: Finally researchers concluded that the investigated systems are little difference; they have all have the capabilities of the standard systems. Also Negar conference management System, has little difference with those of conferences international management systems. These findings can help in the design, development, purchase, or use the new conference management systems.