software has become an important part of our lives. Without softwares the humans cannot be developed.we are using software everywhere. Software engineers are responsible for producing fault-free software which has literally become an essential part of our daily lives. Changeability and conformity are two of the main properties of software design. There are also different processing models for designing software including Build and Fix, Waterfall and Agile software processing design methods.

System software serves as a base for application software. System software includes device drivers, operating systems (OSs), compilers, disk formatters, text editors and utilities helping the computer to operate more efficiently. It is also responsible for managing hardware components and providing basic non-task-specific functions. The system software is usually written in C programming language.

Programming software is a set of tools to aid developers in writing programs. The various tools available are compilers, linkers, debuggers, interpreters and text editors.

Application software is intended to perform certain tasks. Examples of application software include office suites, gaming applications, database systems and educational software. Application software can be a single program or a collection of small programs. This type of software is what consumers most typically think of as "software."