Photo-Lux is an easy-to-use but powerful and fast image viewer and more.
The following graphics formats are supported: BMP, CEL/PIC, CUR,
CUT, DIB, EMF, FAX, G3N/G3F, GIF, ICB, ICO, J2C/J2K/JP2/JPC(JPEG2000),
JPC, JPG/JPEG (RGB, GrayScale, YCbCr, CMYK, YCbCrK), JFIF/JIF, PBM,
PCD, PCX/DCX, PSD/PDD, PSP, PGM, PNG, PPM, PXM, RGB/RGBA, RLA/RPF, RLE,
SGI/BW, TGA, TIF/TIFF, VDA/VST, WMF, WBMP, XIF. Plus, it supports a lot of Camera RAWs formats.

S2K is a screensaver which displays any picture of the following formats (BMP, PNG, PCX, JPEG/JFIF, TGA, TIFF, PICT, WMF/EMF).

A multipurpose program for viewing, converting, and editing images, with a rich tool set, and various effects and filters. Use Batch mode to avoid repetitive operations in processing a large number of images. The program has the convenient ability to run a slide show and capture images from the screen. It also includes handy features such as the ability to print your digital images. Supported formats: tiff, bmp, jpeg, png, psd, tga, pcx, gif etc.

JPEG Japery automates jpg file operations. This package can rename files with jpg tags such as date picture taken. Use the copy or move feature to copy multiple jpeg files to a location or archive files based on jpeg exif tag information. The List feature can create file lists of jpeg files including date digitized and camera make and model. This package can search, alter case, set attributes, encrypt, decrypt, wipe, delete and more.