LibPNG 1.5.30 is available for OS/2, ArcaOS and eComStation
PNG image compression library 1.5.30 for EMX environment - "libpng is the official PNG reference library. It supports almost all PNG features, is extensible, and has been extensively tested for over 20 years."
LibPNG URL: http://www.libpng.org/
Port by: Mikulas Patocka
Source: eCSoft/2