ndpc is the compiler for the natural deduction proof markup language.
Ndpc introduced a markup language for creating natural deduction proofs for propositional logic and classical first order logic, with support for validation, formatting, and exporting to HTML.
Compared to existing similar tools, ndpc is easier to use and looks much more similar to hand written proofs.
Click to watch video demo:
Screencast_20240927_084924.mp4
Go to our getting started page for details about installation and basic usage.
An online tutorial is available here, which covers the syntax (there isn't that many).
Oh no! Ndpc found errors in your perfectly fine proof! The syntax gotcha and the list of supported rules may help.