Here are some of my favorite tools for working with digital images.
Pixelmator. This is my go-to program for digital images, and someday they’ll ship 2.0 and it will be awesome.
Xee calls itself “a lightweight, fast and convenient image viewer and browser.” I agree. The best feature, for my money, is that it lets you losslessly rotate and crop JPEG images. You can do that with jpegtran too, but that’s a command-line tool. Those are great for batch jobs, but image cropping is almost always better done using an interactive GUI front-end.
Acorn is my second-favorite image editor. If Pixelmator wasn’t so darned good, this would be my favorite. Usually what brings me to Acorn is when I need to do something with filters and I can’t figure out how to do it in Pixelmator. The tech support is great, too.
I also use a ton of different command line tools. I’ll write about those someday Real Soon Now.