Editors

BPaint
Easy to use bitmap graphics program for the PC. Written in Blitz Basic by Angus Arthur.
http://website.lineone.net/~angusmarthur/bpaint.htm

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/

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

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

mad god's Tiny Hut
Editor for Wizardry 6, Wizardry 7 and Wizardry 8 games.
http://www.angelfire.com/magic2/madgod/

Paintlet
Easy-to-use graphics editor for Java. Features an XML script interface.
http://www.jdever.com/paintlet/

Paint.NET
An open source image editing and photo manipulation package. Includes discussion forum and a release roadmap. [Windows]
http://www.getpaint.net/

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

Theme Creator Pro
A powerful tool designed to create, edit, browse and manage themes for Sony Ericsson mobile phones.
http://tcpro.lasyk.net

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/