Where can i get an Image and Photo Editing Software for free? [duplicate]

"One of my favorites:

PhotoFiltre is a complete image editing and effects package,
that will not only amaze you with
features but also the fact that it is
free (for personal use). It comes with
many features that rival some
commercial packages, as well as
additional add-on that can be
downloaded from the web site.
PhotoFiltre offers all the standard
editing features (selection, clone
brush, paint brush etc.) as well as a
large selection of image effects,
photo masks, image adjustments,
thumbnail browser and much more. The
program also supports batch processing
to apply filters, sizing, adjustments
and transformations to a large number
of images at once. PhotoFiltre comes
with modern, well designed interface
and is well suited for everything from
simple resizing to advanced photo
editing.

PhotoFiltre's got it all, low resource usage, extremely fast, ease of use and feature-packed.

PhotoFiltre is freeware, a portable version is also available."