These online photo editing tools are all free for basic edits. Most rely on Flash, so be sure to first update your browser’s Flash plug-in for optimal functionality.
PicMonkey wide variety of filters and fonts
pixlr one of the most full-featured imaging packages available.
fotor friendly, easy-to-use interface
BeFunky astronomical collection of beautiful elements: Cartoonizer and Inkify paints, grunge frames, huge collection of stickers and backgrounds, built-in collage maker
Please note that I don’t use any of these programs. This list is the result for research and feedback from friends that use them when editing photos taken in Second Life.