Concept/ Product Information:
Software is a generic term for organized collections of computer data and instructions, often broken into two major categories: system software that provides the basic non-task-specific functions of the computer, and application software which is used by users to accomplish specific tasks.
MICROSOFT : Desktop OS, Network OS, MS-Office, MS-Exchange, Share Point etc.
LINUX : Redhat, Novell Suse, Ubuntu etc., for Desktop, Laptop & Server.
ADOBE : Photoshop, PageMaker, PDF Writer, PDF Professional etc.