Application software helps users perform specific tasks like word processing, graphics design, and playing games. There are three main types: commercial applications that must be purchased, shareware that users can try before buying, and freeware that is free to use. Common applications include word processors, spreadsheets, graphics programs, databases, and communication tools. Software vendors often bundle multiple applications together at a lower combined price for compatibility and usability. Applications are designed to run on specific operating systems and may not be compatible across platforms. The operating system manages interactions with the computer hardware and must run for any programs to function, while applications are optional programs for specific tasks.