cirqtools is a Python package where I keep common code between my various quantum projects.

cirqtools.qudit contains various gate definitions useful when dealing with qudits.

cirqtools.qutrit contains qutrit-specific instances of types in cirqtools.qudit.

cirqtools.ClassicalSimulator will efficiently simulate any classical reversible circuit (any circuit containing gates whose unitaries are permutation matrices).

cirqtools.FeynmanPathSimulator is an inefficient attempt at a Feynman Path-based simulator.