https://www.fileviewpro.com/en/file-extension-r09/
FileView Pro is an cutting-edge and versatile application created to ease the task of opening, inspecting, and managing a wide range of file types on your PC, such as specific extensions like .R09 files. With the capability to handle numerous file types, File View Pro saves users from the frustration of installing multiple programs to access various file formats. Whether it's text files, graphics, movies, or split archives, this intuitive program allows you to seamlessly access your files without the necessity of particular application