See the links page for unoffical binaries for these and other systems.
Official Source Release
The source release includes all the code for the above versions plus
code for the systems listed below.
Unix (*BSD, System V, Solaris, HP-UX, ...)
BeOS
VMS
Also in the source release are instructions for porting to other systems
and (out of date) code for systems that are no longer supported.
Download the source.
Hosted courtesy of alt.org.