The latest version of the programming language J, compiled to run under NeXTOS 2 and 3.
The binary and supporting documentation files are in .pkg format, and should be installed as root so the appropriate files go into the right places in the /usr/local hierarchy.
I compiled this myself from the source code (which is not publicly available). I will continue to provide compiled releases of this language as updates become available from the originators in Canada. (The past progression has been an update every 7-8 months, which should slow down substantially after the next two years).