math-function-y
math-greater
math-integral
math-integral-x
math-integrals
math-lower
math-not
math-pi
math-pi-divide-2
math-x-divide-2
math-x-divide-y
math-x-divide-y-2
math-x-floor-divide-y
math-x-minus-x
math-x-minus-y
math-x-plus-x
math-x-plus-y
math-xy
math-y-minus-y
math-y-plus-y
regex
regex-off
x-power-y
All under MIT or ISC license - free for your personal and commercial projects.