With View PPTX PLUS, you can not only create and edit PowerPoint presentation documents (.pptx and .ppt) directly, but also open many more common presentation document formats (.odp, .sxi, .uop, .sdd and etc.).

Support formats:
.odp, .otp, .odg, .sxi, .sti, .sxd, .fodp, .xml, .uop, .uof, .pptx, .ppsx, .potx, .potm, .ppt, .dps, .pps, .pot, .dpt, .cgm, .pptx, .pptm, .key, .cwk, .sdd