Si sos de esos que neo pueden dejar de usar windows, por ciertos programas como el photoshop… Muchas veces te habran dicho que uses gimp… pero…… gimp es complicado de aprender a usar… y si yo ya se usar photoshop… porque cambiaria…
Bueno aca te traigo una salida, GimpShop, trae las mismas herramientas que gimp, pero ambientado a photoshop, por lo que sera una herramienta mucho mas comoda, ademas de ser gratis y open source…
Espero que les sirva, aca les dejo un link para su descarga http://www.gimpshop.com/

Please, stop talking about gimpshop. The project hasn’t been updated in ages, and is based on an ancient version of gimp. The new beta of the real GIMP is much more “photoshop compatible” (e.g. reads psd files and brushes better), and is possible to theme into something looking a lot more like photoshop than what gimpshop ever could.
it even says right there! based on gimp 2.2.8. In between that time, we’ve had beta 2.3, release 2.4, beta 2.5, release 2.6, beta 2.7 and this january, release 2.8 is coming.
Oh, wow, gimpshop dot com is not even the real site. See http://en.wikipedia.org/wiki/Gimpshop on how Scott Moschella, the main developer, stopped working on it because someone named “Michael Collins” made the fake gimpshop dot com site and basically took over its Google ranking.