This publication, the results of which are presented, analyzed and discussed in point 3 of this text, is only part of the author's research on “the reliability and optimization by digitization of the environmental monitoring of projects in DR Congo. Only environmental studies subject to prior environmental and social impact study are concerned. In his research the author has used several materials and methods, but in this excerpt, the material presented is the ESIA of Itela Avenue in Mbandaka. In an ESIA (environmental and social impact study), the part devoted to the implementation of the environmental and social aspects of the project is the ESMP (environmental and social management plan). The author has taken to take as material only environmental and social studies validated by the specialized body of the DR Congo (ACE) and international organizations deemed suitable in terms of environmental and social protection, such as the World Bank. The material “ESIA avenue Itela”, a study approved by the ACE of the DRC is also placed on the World Bank site, for all purposes such as this study. An application for environmental and social monitoring optimized through digitization has been produced. It is presented in great detail in this document. It contains data emanating from the ESMP (resulting from the ESIA) as well as suitable instruments to be completed during the monitoring of all the environmental and social aspects of the studied project. This data is placed in several menus in digitized form. To handle the application, users must be educated on how it works, in order to access certain parts, insert data, save them and / or amend them. This application thus allows use at all times by several project stakeholders who can discuss at any time.