This format described with extension .ppt, which means PowerPoint, shows its description as primary file type for program Microsoft Office PowerPoint. It is part of binary file where is it saved and its main task is to create presentations. One of many advantages is that he´s shareable and accessible for free. Files with this extension can contain many types of attachments like texts, pictures, music or videos. Format is very all-purpose.
First version of this file format was released in 1987 together with PowerPoint v1.0, but this application was created only for Mac OS. Three years later was the first version for Microsoft released – it was in Windows 3.0 and the Powerpoint was in v2.0. After another three years was this format included in suite package called Office for Windows. So it took 6 years to get into contemporary position.
Default program for opening these files is Microsoft Office PowerPoint. Free variation is program OpenOffice.org Impress, or LibreOffice Impress. To create files you just need web app called Microsoft Office PowerPoint Online, which is distributed for free but the necessity is to have Microsoft account.