Marium CSL: “Marium CSL” software is developed for the microfinance industry. This mobile application is not a native mobile application, it's a web application that “Marium CSL” has bought from “Somity Keeper” (a renowned software company in Bangladesh) for their business purposes. Through this software “Marium CSL” manages all their business activities and all their esteemed customers can use the software as per their need. This software is developed with PHP Laravel Framework. Security has been given special importance during the development of this software so that users can use the software safely.