Microsoft Excel is a spreadsheet application developed by Microsoft for Microsoft Windows, Mac OS X, and iOS. It features calculation, graphing tools, pivot tables, and a macro programming language called Visual Basic for Applications. It has been a very widely applied spreadsheet for these platforms, especially since version 5 in 1993, and it has replaced Lotus 1-2-3 as the industry standard for spreadsheets. Excel forms part of Microsoft Office. Microsoft Excel has the basic features of all spreadsheets, using a grid of cells arranged in numbered rows and letter-named columns to organize data manipulations like arithmetic operations. It has a battery of supplied functions to answer statistical, engineering and financial needs. In addition, it can display data as line graphs, histograms and charts. It has a programming aspect, Visual Basic for Applications, allowing the user to employ a wide variety of numerical methods, for example, for solving differential equations of mathematical physics, and then reporting the results back to the spreadsheet.
Microsoft Visio is an application for create diagrams for the Windows environment. The program serves to generate diagrams of various types, such as organization charts, flowcharts, data modeling (using UML or other graphical notation any), network diagrams, floor plans, posters, etc. Visio can be considered an intermediary between a CAD program (specializing in high-precision vector drawing for engineering) and an artistic drawing program such as Paint. In comparison with these more specialized tools, Visio functionalities are much lower; It is not as accurate as AutoCAD, and does not provide artistic resources such as Paint. However, flexibility, simplicity of use and quality of tools make it an excellent tool for fast applications, sketches, and diagrams of personal or professional use.
Minitab is a computer program designed for statistical purposes. It is widely used in universities in introductory statistics courses. It is also used in companies at a more advanced level, with more specific functions aimed at management. Its interface is similar to a spreadsheet like Microsoft Excel but with the ability to perform complex statistical analyzes. The program was developed in 1972. Minitab is generally used in conjunction with six sigma, which is a way to improve routine processes.