File with an .ODP extension contains a presentation comprised of slides containing graphics, texts, multimedia objects and transition effects, music. The file is stored in the OpenDocument format, based on the XML OASIS. ODP presentations are created in the Impress program, which is a component of the office package Apache OpenOffice, also known as OpenOffice.org

Apache OpenOffice is a free office software. The Impress program has a functionality similar to PowerPoint of the paid Microsoft Office package, default format in which data is stored in Microsoft are PPT and PPTX files. Also other programs can store data into ODP files.