A basic Suduko solver.
Enter words to use all the letters from an existing sentence. No checking, just a simple UI to assist the process.
Use ZXKM to move the cursor, E to enter an alphanumeric character (0-9a0zA-Z only), S(s) to save the file to disk (take a copy if you wish to keep it) and L(l) to load it.
Guess the 3 digit number. Download the .bat file and open it at a command prompt.
A JSON decoder for DOS, using the NHS Cyber Attack APIs
A qubit is a bit where the state is between 0 and 1. The usual logic gates can be applied, with a resulting qubit.
Testing JavaScript events for a digital TV browser.