gPhoto is a program and library framework that lets users download pictures from their digital cameras. The libgphoto2 library gives you access to hundreds of models of digital cameras on several platforms. GIT repo and Issue tracker lives at https://github.com/gphoto/ these days.
A full featured cross-platform image library
Developer's Image Library (DevIL) is a cross-platform image library utilizing a simple syntax to load, save, convert, manipulate, filter and display a variety of images with ease.
Prepress image viewer and converter
Prepress image viewer and converter. Supports RGB/CMYK/GRAY/PNG/JPEG/TIFF/PSD 8/16/32 bit images and ICC/ICM v2/v4 color profiles.
The "Java Mass JPEG Resizer Tool" has following Features Resize all JPEG Images of a Directory, Create Webgalleries, Pack it to an ZIP File for E-Mail Attachments. The Tool is available in German and English.
FNServer is image collaboration software for web servers written for PHP4/5 implementing the FotoNotes(TM) image annotation specification. Modular and object-oriented, FNServer runs stand-alone or as a part of other CMS's. Offers blog and wiki features.
Visual Image Viewer :: Build using Python
What you will do when you need to manage all your Image files according to what they shows/represent, I am not talking about you, what I also done in past, just select Image files one by one create folder for that kind of Image files and paste into that folder. Now Using this application you just have to define from which PATH you want to work with your Image Files and that's done, and define possible categories for Image files and use your Num-pad keys from 0, 1, 2, 3, and so on.... That Image that you are watching right now, will automatically copied to your defined locations. means if you hit 0 ( Image will automatically copied to your first defined location, ) and so on...