The SLPSoft Software System Design and Modeling enables developers to model and design a software program by viewing it as a system. When designing a system, then we start with the system requirement and then translate the system requirement to a real product. The SLPSoft Software System Design and Modeling enables developers to start developing their software programs by thinking in terms of systems and by starting from the program requirements. Using the software, developers can think and view the development of their applications in different angles. For instance the software allows developers to view the system with inputs and output as separate entities as well as the functions of the system. By thinking the software in terms of systems, the following views and models are identified within the software development process. • System view • Data input output view • Data communication view • System interconnect view • System and function view • Data processing view • Sub system view • Data communication view • Class identification, object identification, interface identification • Etc. Each view mentioned above enables developers to define classes, class hierarchy, and sub classes. This software can be viewed as Pre-UML software tools. It is good to use this software to model and design the system before starting using UML. By using this software before starting UML modeling during a development phase, it will help users identify classes and objects in the UML models and also the relationship between classes and object in the UML design. The SLPSoft Software System Design and Modeling is very useful when developing software that needs to be updated all the time. The software enables users to view their overall project development as components, where they can navigate and choose the components that are needed to be update and update them when they have too. This software provides a better way for developers to organize their software developments. For example a part of the software can be viewed as a tools that help users identify UML elements such has classes, objects, interface, attributes, operations etc.