ArcSoft RAW Thumbnail Viewer
plug-in for Windows that allows previewing of RAW photos when browsing through files.

Art Plus Digital Photo Recovery
recover lost images from digital camera memory cards.

EXIF Image Viewer
view EXIF information.

Exposure Plot
analyzes usage of focal length, ISO, aperture and shutter speed.

FastStone image viewer
image browser, viewer, converter and editor.

FilterSIM
photo filter simulator.

FrameFun
add mats, frames and drop shadows to digital images.

FuturePaint
full-featured image editing.

Gimp
(Windows, Mac, Unix) - photo retouching Gimp installers.

Hugin
stitching software that lets you merge several images into a wide-angle panorama.

Irfanview
image viewer and converter; reads exit data.

MP4Cam2AVI
quickly converts .mp4/.MOV files to .AVI files (lossless).

Neat Image
digital image noise reduction.

Paint.NET
image editing program that supports layers.

Photo Dater
add date and other information to photo.

PhotoPlus
image editing software offering layers.

Photoshop Album Starter Edition
photo organizer.

Photo Story
add motion, effects, music and more to digital photos. Windows XP only.

PIXresizer
image resizer.

Picasa
photo organizing and editing; one of several free programs in Google Pack.

uMark Lite
image watermarking software.

VicMan's Photo Editor
image editing.

VirtualDub
video capture and processing utility.

virtualPhotographer
apply photographic styles to images.