A number of simulators and editors for Laws of Form /
Boundary Math expressions have been written over the years.
Jeff James wrote the first one of which we are aware, called
"iLogic" (for Imaginary Logic)
in 1993-4 at Interval Research. iLogic showed clearly for the first time how the imaginary
logic values behave, and allowed us to explore many new forms. iLogic has not been
shown publicly or published, but we hope to do so, and perhaps to revive this program someday.
More recently, Francis Gastellu
has written an excellent program called "Laws of Form Notebook"
that can edit, display, and simulate LoF/BM expressions including imaginaries.
You can download it here.