Source code for XLISP-STAT for X11, Sun, 4.[23]BSD UNIX and Macintosh versions and executables for the Macintosh are available free of charge for non-commercial use. You should, however, be prepared to bear the cost of copying, for example by supplying a disk or tape and a stamped mailing envelope. You can also obtain the source code and Macintosh executables by anonymous ftp over the internet from umnstat.stat.umn.edu (128.101.51.1).
A version for the Mac II requiring the MC68881 coprocessor is available as well. This version is compiled to access the coprocessor directly and will therefore not run on a machine without the coprocessor. Numerical computations with this version are about 7 to 10 times faster on a Mac II than without the direct coprocessor access.