Since software is an ever widening field, I have begun to categorise these things more so that you do not have an endless page.
Photography and Image Manipulation
In this section you will find some tutorials and links to some free tools I have tested and regularly used that I believe will be handy for any business or persoon looking to work with images online. These tools include image re-sizers and watermarkers and more as they are added.
Go to image tutorials