PNG
PNG is the old name for CL-PNG, a Library for reading and writing PNG (Portable Network Graphics) files.

cl-png is still called png according to its asdf system definition, hence the asdf-install tag for cl-png is on this page, not that one. Makes sense? Don't worry

ASDF-install package (obsolete) http://www.ljosa.com/~ljosa/software/cl-png/download/cl-png-0.6.tar.gz