Software suites are bundles of several programs together that perform essential, common, functions in some area of activity. Many types of suites exist, for varied uses, most of which are vertical applications: accounting, manufacturing, real estate, some area of science, etc. Office Suites are the most common and general type of software suite. They are bundles of several programs together that perform essential, common office functions. They usually include a word processor, spreadsheet, presentation program, some kind of data base, and likely other features such as drawing/charting programs, calendar management, email, a web browser, and generic office management services other than those listed.