Paint.NET - An open source image editing and photo manipulation package. Includes discussion forum and a release roadmap. [Windows] - http://www.getpaint.net/
iICO - Icon editor for Windows that can handle both icon and cursor files, plus the semitransparent icons in Windows XP. - http://www.mintrasystems.com/products/mintra/product.php?p=iico
eMage - Graphics editor for DOS with features such as flood fill, pattern fill, and pattern spray. Provides information on opening bitmaps with Turbo C++ 3.0, handling mouse events through interrupts, and some graphics algorithms in a programming context. - http://www.writeka.com/emage/
Brush Strokes Image Editor - An image editor with many features including GIF animation. - http://www.pabird.supanet.com/freesoftware/brushstrokes
Paintlet - Easy-to-use online graphics editors for Java. - http://www.jdever.com
Theme Creator Pro - A powerful tool designed to create, edit, browse and manage themes for Sony Ericsson mobile phones. - http://tcpro.lasyk.net
i.Mage - Simple and fast free graphics editor with a split view zoom and basic graphics file support. Supports 8, 16, 24 and 32 bit images in any resolution. [Win95/NT/BeOS x86 r4] - http://www.memecode.com/image.php
Photo Wizard - Import images and retouch them, add special effects, crop and resize, enhance the colors, brightness, remove the red eye. - http://www.americansys.com/photowizard.htm
BPaint - Easy to use bitmap graphics program for the PC. Written in Blitz Basic by Angus Arthur. - http://website.lineone.net/~angusmarthur/bpaint.htm
VicMan's Photo Editor - A powerful, award-winning application with a skin-based interface, an excellent feature set, and support for more than 30 file types. - http://www.vicman.net/vcwphoto/