This article presents a comparison of image viewers and image organizers which can be used for image viewing.
Via Photoshop: contact sheet, merge to HDR, PDF presentation, Photomerge, Web picture gallery
32 languages (version 4.28/4.30)
via IrfanView Thumbnails/Plugins: contact sheet creation, thumbnail creation, web gallery creation, face detection
CRW, MRW, RAW, SRF
3FR, CRW, DCR, ERF, K25, KDC, MEF, MOS, MRW, PTX, R3D, RAW, SR2, SRF
CRW, MOS, RAW