From Just Solve the File Format Problem
PhotoDeluxe is a discontinued raster graphics editor from Adobe. Its native PDD file format is a subformat and extension of Photoshop PSD format. The extent to which it is compatible with PSD is unclear.
- Adobe PhotoDeluxe - Win31-Mac - CD from archive.org
- Adobe PhotoDeluxe 4.1 and Adobe Photoshop 5.0LE - CD from archive.org