Files with CMX extension are Corel Exchange image file format (also known as Corel Metafile Exchange) that is used as presentation by CorelSuite applications. It contains image data as vector graphics as well as metadata that describes the image. CMX files can be opened by CorelDraw, Corel Presentations, Paint Shop Pro and some versions of Adobe Illustrator. CMX files can be converted to other formats such as JPG and EPS.
Files with ODP extension represents the presentation file format used by OpenOffice.org in the OASIS OpenDocument standard. A presentation file is a collection of slides where each slide can comprise text, images, formatting, animations, and other media. These slides are presented to an audience in the form of slideshows with custom presentation settings.
You can also convert CMX into many other file formats. Please see the complete list below.