Tags: library, algebra, discrete mathematics, logic.
Tags: logic, logic programming.
Homepage: http://clip.dia.fi.upm.es/Software/Ciao/
Tags: logic, automated theorem proving.
Homepage: http://coq.inria.fr/
Tags: logic.
Homepage: http://en.nothingisreal.com/wiki/DELORES
Tags: logic, automated theorem proving.
Homepage: http://www4.informatik.tu-muenchen.de/~schulz/WORK/eprover.html
Tags: logic, Z notation, higher-order logic, automated theorem proving.
Homepage: http://lemma-one.com/ProofPower/
Tags: logic, automated theorem proving.
Homepage: http://pvs.csl.sri.com/
Tags: logic, logic programming.
Homepage: http://www.swi-prolog.org/