160MB of disk space for Enterprise Edition (32-bit) plus documentation

FreeBSD 7.x, or later with compat7x
(if you want to run 32-bit LispWorks on FreeBSD 6.x, then please contact Lisp Support)

180MB of disk space for Enterprise Edition (64-bit) plus documentation

GTK+ 2 (version 2.4 or higher) to run the GTK+ GUI.

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

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

Firefox or Opera web browser for viewing on-line documentation