replit/repl.it — pull request #91 by ngn (2014-01-01 18:51:57+00:00)
Title: Add APL support

See https://github.com/ngn/apl#readme and its demo.
An effort by @plj541 to provide a similar REPL is available at: http://home.comcast.net/~paul.l.jackson/APL.js/

APL uses a character set of its own, so users may need to spend some additional effort configuring their keyboards, but I think APL would be a nice addition to repl.it anyway.