This is twee, a prover for equational problems. To install, run cabal install. Afterwards, invoke as twee nameofproblem.p. The problem should be in TPTP format (http://www.tptp.org). You can find a few examples in the tests directory. All axioms and conjectures must be equations, but you can freely use types and quantifiers. Twee is experimental software, use at your own risk!