• The GIMP, the free alternative to Photoshop
  • Best version of Gimp for OSX i found until now Gimp Painter
• Artrage is a (commercial) painting software, simulating different types of drawing techniques (and works with wine, a windows emulator for linux)

Addons

• Additional GIMP Scripts http://gimpfx-foundry.sourceforge.net/
• Gimp normalmap plugin

cmyk addon for gimp (under linux)

install: http://cue.yellowmagic.info/softwares/separate.html

requires: aptitude install liblcms1-dev

color profiles for gimp

aptitude install icc-profiles

You can get nice CMYK color profiles by installing the Ubuntu package "" and download color profiles of Adobe (copy them into ~/color/icc).

http://www.adobe.com/support/downloads/iccprofiles/iccprofiles_linux.html (is broken) http://download.adobe.com/pub/adobe/iccprofiles/win/AdobeICCProfiles.zip

( found at http://my.opera.com/area42/blog/gimp-cmyk?prevpoll=1 )

cinepaint which works under ubuntu 9.04

http://sidux.net/etorix/