160MB of disk space for Enterprise Edition plus documentation

FreeBSD 7.x, or later with compat7x
(if you want to run on FreeBSD 6.x, then please contact Lisp Support)

Any modern machine is likely to have sufficient RAM to run LispWorks as distributed.

GTK+ 2.4 or higher to run the GTK+ GUI.

Open Motif 2.2.x and Imlib to run the deprecated Motif GUI

Netscape, Mozilla, FireFox or Opera Web browser for viewing on-line documentation