This thesis work presents the development process of a real-time bug tracking web application using React.js, Redux and Firebase. The application will apply the agile principles and provide the main functionalities needed by any software development team to handle bugs efficiently. Generally, the application will have two modules. The first one is the admin module, in which the registered users have administrative privileges like adding projects, adding developers to projects, adding bugs reported by testers, assigning bugs to developers, viewing bugs’ progress logs, viewing simple associated reports, and adding bug types, severity levels and statuses. The second module is the developer module, in which the developers can view their projects and assigned bugs, leave feedback, and change the status of their bugs.