PRC is a file format used for storing 3D models in a compressed format. It is commonly used in the CAD (Computer-Aided Design) industry for sharing 3D designs. PRC files can be opened in compatible CAD software and are ideal for transmitting complex 3D models with reduced file sizes.
OEB is an ebook format used by the Open eBook standard for digital publications. It supports rich text, images, and hyperlinks, and is commonly used for distributing digital books and content. OEB files are now considered obsolete, replaced by the more widely used EPUB format.