Algol 68 implementation available for linux at sourceforge
FYI: Algol 68 is available at sourceforge. (Including an easy interpreter and the ELLA Algol68RS translator)
It is interesting to see how much has "advanced" in IT since the Apollo 8 crew Borman, Lovell and Anders first eye-balled an Earthrise in December 1968!
Enjoy NevilleDNZ