editing pictures

Notepad with some editing feature.

Image Tricks — photo and image editing software for Mac

Award winning video editing software

QuickTime Effects include 7 video editing effects plug-ins.

It is advanced video editing and compositing software with over 150 built-in.

geared towards viewing / editing Mac OS X's preference files

Create nice time-lapse animations from pictures of the sun or the moon.

Get creative with frames and stickers for your pictures.

Connect Apple Mail email to friends' Facebook profile pictures.

Find duplicate pictures on your computer.