Aladdin Ghostscript 5.10 is released under the GPL

Aladdin Ghostscript 5.10, originally released in November 1997,
has now been released with the GPL as GNU Ghostscript 5.10.

“Please DO NOT report problems with GNU Ghostscript 5.10 to
Aladdin, unless we accidentally did something really stupid like
omit a crucial file.”