CypherSwapTool

CypherSwapTool. A utility to help crack swap cyphers. You can enter in the cypher and then play with what letter is swapped with what to try and make sense of it. It shows the cypher text, plain text, the letter swaps,  and unused letters

Arrow keys to move positions and shift letters.  pgUp and pgDown to switch between the swap cypher, the encrypted text, and the plain text. 

(Really, I'm testing out releasing emscripten-compiled C projects on itch in prep for the 2026 7DRL challenge.)