Comprehensive feedback and evaluation for students' work in academic writing are essentially imperative for the improvement of the students' writing skills. Yet, providing and receiving such an assessment in a large writing class is still a central challenge. Therefore, WISSE (Writing Integrated Assessment) as a free-access online application needs to be developed to address the said situation. This paper is a part of WISSE development and highlights more on the prototype and manual book of the aforementioned application. Employing process writing principles supported by ready-touse online applications, WISSE is designed as a web-based service that is user-friendly. A manual book is also arranged to facilitate the operation.