A very useful editor

Originally a fantastic shareware application, LiveQuartz has been bringing Apple’s powerful Core Graphics developer framework to Mac users for 11 years+. It can take some getting used to and sometimes has a few quarks. Still, LiveQuartz offers very powerful image editing and compositing abilties I have not found elsewhere. A lot of fun and very much worth your time.

gsi-2011 about LiveQuartz, v2.5.11