There are many free open source or web based graphics programs out there. Like all teams, the last thing we need to spend money on is software. Can we make a list here of your favorite free open source or web based applications that make your life easier. Let us know what you use them for and tips on how to use them.
I'll start with 4 image manulipation programs.
Sumo Paint I just found this. Web based application. Photoshop stuff
Gimp I have this on a flash drive. It is a great photoshop clone. There are many programs that you can run from a flash drive. Our school does not allow installing software on the computers, so running applications from a flash drive works for us.
Inkscape VECTOR GRAPHICS.... If you want an image to scale, you need inkscape. The takes the place of Illustrator. This is a perfect tool for making logos.
Irfanview Nice image editing. Best feature is the ability to batch process images. Want to make all images the same size for a web page? Use this.
What's in your toolbox?