Quick give me a program that is like arless image web page creator except for mac
 

I have some one doing some work for me and they are on a Mac I need to have thumbs done and I use arles but he needs a program similar for a Mac. Any ideas?

fuel

I use photoshop actions and a gallery with generic image names to make thumbs. More customizable, better compression of the images, etc.

Resize 120x90
Sharpen
Save for Web 60%
wash, rinse, repeat
(one for wide, one for tall)