BePNG

BePNG is a small application which displays images stored in
the PNG graphic format. It also saves images in a native
"Compressed BBitmap" format and displays them.

BePng and BePNG._rsc are the compiled application and its
resources. Just transfer it to your BeBox, do a "setfile BePNG",
and drop PNG images on it. 

BePNG.sea is a Macintosh self-extracting archive containing
the Metrowerks Codewarrior projects and sources used to build
BePNG.