Free tool to Create/Edit PNG Images?

Is there any free tool available for creating and editing PNG Images?

From stackoverflow

• The GIMP (GNU Image Manipulation Program). It's free, open source and runs on Windows and Linux (and maybe Mac?).

  DanJ : and is almost as powerful as paintshop

  Shog9 : +1 for The GIMP! Fantastic software.

  Mecki : Paintshop??? It's almost as powerful as Photoshop actually ;-) And it runs on Mac, so not very lovely.

• Paint.NET will create and edit PNGs with gusto. It's an excellent program in many respects. It's free as in beer and speech.

  Chris Lively : awesome product too.

  Phill Sacre : Agreed. Paint.NET rocks.

  Will : I like it in general, but there are some gigantic holes in it, such as a lack of a magic eraser (!!!).

  Ryan : I'm not sure what you mean by "magic eraser," but try using the recolor tool and recoloring to transparent.

  Kip : Your link is wrong, you want http://www.getpaint.net/

  James Curran : I'm pretty sure that the term (at least) "Magic Eraser" is an Adobe trademark. Whether or not they've patented the concept (and are willing to fight for it) is another matter.

  Miles : Paint.Net is awesome, I'd use this over anything else (that's free)

  Carl : I'd use it over anything else that is not free, as it's easier to use than any commercial tool I've ever used

  rshimoda : Best there is for simple image manipulation - the lasso tool and the implementation of layers (to build shadows / transparency) is just short of fantastic

• ImageMagick and GD can handle PNGs too; heck, you could even do stuff with nothing but gdk-pixbuf. Are you looking for a graphical editor, or scriptable/embeddable libraries?

• Inkscape is a vector drawing program that exports PNG images. So, you end up editing SVG documents and exporting them to PNGs. Inkscape is good if you're starting from scratch, but wouldn't be ideal if you just want to edit existing PNGs.

  Note--Inkscape is open source and available for free on multiple platforms.

• If you're looking for free software with the look-and-feel of Photoshop, try GIMPshop.

• Also Inkscape lets you save as XAML :)