Online Image Editor - Online editor for images and animated gifs with multiple effects and tools
PhotoFlare - Quick, simple but powerful Cross Platform image editor.
Pixelitor - Pixelitor is a cross-platform raster graphics editor written in Java.
PixBuilder - Free Photo Editing Software for PC
RealWorld Photos - RealWorld Photos is an free portable photo editor for Windows.
PhotoDemon - Lightweight portable BSD licensed photo editor for Windows focused on performance and usability.