1 We collect here versions of the programming languages we'll be looking at that you can run in your web browser:
3 * [[Untyped lambda calculus evaluator|code/lambda_evaluator]] on this site
6 ; also a [[library|code/lambda_library]] of lambda-calculus arithmetical and list operations (some relatively advanced)
9 * [Scheme](http://tryscheme.sourceforge.net/)
11 * [OCaml](http://try.ocamlpro.com/) <!-- see also http://ocaml.org/learn/teaching-ocaml.html#Inthebrowser -->
13 * [Haskell](http://tryhaskell.org/) <!-- similar websites listed at https://wiki.haskell.org/Learning_Haskell#Trying_Haskell_online -->