Calculates income tax form entries, helps do your taxes.
Complex quaternion calculator with Lorentz boosts and rotations
Keep track of all your monsters during your encounters in a simple way
Simple calculator to help with the creation of D&D 5E encounters.
Command-line calculator of basic statistics.
Console-based Hash Calculator, written by D. Reichl
3-DPhysicsSim is an interactive 3-D physics simulator.