[jarcane]

http://exercism.io supports Common Lisp, Scheme, Clojure, and Emacs Lisp, plus a ton of others, and runs through a neat little CLI app locally, so you can use your own editor (I've been doing Rust challenges in Emacs, frex.)

http://www.codewars.com/ also supports Clojure, and Haskell, which is not a Lisp but is FP.

Hacker Rank pretty much supports everything, but the reason for this is that it handles all the tests through stdio instead of a test suite, resulting in a lot of irritating boilerplate code.

[dkvasnicka]

Well, that stdio thing is actually what I love about Hacker Rank :) I don't think the boilerplate code is a problem, if you use a reasonable language. Racket is a pleasure to use over there, Clojure slightly less so but wouldn't call it irritating...

But yeah, I've seen some Java solutions on HR...

[jarcane]

I just wind up getting irritated having to rewrite the same code all the time. Some popular languages will generally come with a pre-filled template with the I/O already covered, but quite a lot of the FP stuff didn't.