Iridient Developer is a more complete RAW processor and supports most every RAW camera ever made in addition to standard images like JPEG, TIFF, etc. It outputs fully processed images in many standard image formats like JPEG, TIFF, PNG, PSD, etc. It does not support DNG output as this format is primarily specific to RAW image data. TIFF is very closely related to DNG and more applicable to Iridient Developer. Iridient Developer is $99US+tax and macOS only.
Iridient X-Transformer is specific to fairly recent (past 4-5 years) Fujifilm RAF images only. It feature only a few of the earliest RAW processing stages (demosaic, sharpening, noise reduction, auto lens corrections) from Iridient Developer, has only coarse (low-med-high) adjustment and no visual preview. X-Transformer leaves the image data in a fairly "raw" state and only outputs to DNG format. The DNG must be processed in some other RAW processor like Adobe Lightroom/ACR, Iridient Developer and more in order to produce a fully processed, standard image format like JPEG or TIFF. X-Transformer is $29.99US+tax and cross platform (macOS or Windows).