ViewPic is a lightning fast image viewer, you can quickly browse through all images in a folder. It's designed for improving your image viewing experience on Mac OS X.

GraphicConverter is an all-purpose image-editing program that can import 200 different graphic-based formats, edit the image, and export it to any of 80 available file formats. The high-end editing tools are perfect for graphic manipulation as well as the ability to use Photoshop-compatible plug-ins. It offers batch-conversion capabilities, a slide-show window, and so much more.