Sandbox for your own language

Lets you describe your own domain language with ordinary definitions and run it right away: numbers, strings, lists, quote, define, lambda, if, cond, let, when, unless, and, or, begin, map, filter, foldl, apply, display and more than thirty built-in functions. Execution is limited by a step budget and a call depth, so endless recursion stops with an explanation, and there is no access to files, the network or the system.

Fill in the fields, run the tool and review the result. Your input is not added to a public page. Use the learning mode for calculation details.