Enter any URI which returns data in JSON form, and you see it displayed as (possibly-nested) lists:
or paste a JSON string into here:
For example, try one of these:
http://feeds.delicious.com/v2/json/recent
http://api.ihackernews.com/page
or this:
{"bindings":
[
{"ircEvent": "PRIVMSG", "regex": "^http://.*"},
{"ircEvent": "PRIVMSG", "regex": "^delete.*"},
{"ircEvent": "PRIVMSG", "regex": "^random.*"}
]
}