Image Processing Tools
1 Free Image Editors
Obviously there are a large number of commercial image manipulation
packages available. However, there are free
image viewers that you might find very valuable, including:
2 Free Image Viewers and Converters
There are also some free
image viewers that you might find very valuable, including:
3 Visual Content
There are a variety of sites containing visual content.
You are responsible for using them responsibly and legally.
The Harvard University library also maintains a list of sites.