[1-12] Constraint Libraries for C and LISP Programs

Patrick Prosser <pat@cs.strath.ac.uk> discusses various standard
algorithms in the journal Computational Intelligence vol 9(3), 1993.
Scheme versions available from Pat on request; Lisp implementations
are available from ftp://ftp.cs.strath.ac.uk/local/pat/csp-lab.

Peter Van Beek <vanbeek@cs.ualberta.ca> has written a set of libraries
for C. This package is available from ftp://ftp.cs.ualberta.ca/pub/ai/csp
where you will find a README and also csplib.tar.Z. Also available from
the archive site for this FAQ (see section [1-1]).