gnaw — playground

A concatenative (Forth-like) stack language with built-in primitives for CTF-style encoding puzzles — hex↔bytes, repeating-key XOR, ROT13, Base64 — composed directly on the stack. Runs entirely in your browser via WebAssembly, nothing is sent anywhere. Source on GitHub.

source

output

Words:

dup drop swap over rot nip tuck · + - * / mod · and or xor not shl shr · = < > <= >= ·
  . hex. emit cr type · @ ! alloc here · >r r> r@ · : name ... ; · if/else/then · begin/until · do/loop + i · see ·
  hex>bytes bytes>hex xorkey rot13 b64encode b64decode brute · .s words slurp*

* slurp (read a file) works in the CLI only — there is no filesystem in the browser.