System Software helps in running the computer hardware and computer system. It helps to shield the programmer to a great extent from the details of the particular computer hardware or system being used, especially memory and other accessory devices like printers, readers, communications, displays, keyboards, displays,

Programming Software provides tools to assist a programmer to write computer programs and software using specialised language called programming language. These tools are merged by integrated development environment (IDE) and a programmer may not need to type multiple commands for compiling, debugging, tracing etc., because the IDE usually has an advance Graphical User Interface or GUI. Graphical User Interface acts as an interface between the computer and the user.

Application Software allows the user to carry out one or more specific tasks which are not computer related. These applications include business software, medical software, educational software, databases and computer games. Now- a- days almost every field uses some form of application software.

Computer Software has to be loaded into the computer's storage system like the hard drive, RAM or the memory. The computer is able to execute the software only when it is loaded. Computers operate by executing the programs. There are numerous software manufacturers providing the software. Some of the well known brands include Microsoft, Adobe, Eurotalk, Symantec, Global software publishing etc. The software made by these brands is available on the net at competitive prices.