For those who might be interested, I (kinda) resurrected the tool @joepie91 created 3 years ago: http://lowendtalk.com/discussion/5006/new-project-whois-tool-with-json-api (It's giving out 500 error as of the time I wrote this)
It uses @joepie91's python-whois as a parser. Results are live and never gets cached. It has a backend which consists 9 servers, so I don't know how much traffic would it hold up to. HTTPS is available if you choose to use it. For .com, .net and .org it works quite well, but things might be broken for several TLD's, in that case you can PM me or just open an issue at python-whois, as that is what I'm going to do too.
You can try with writing the domain you want after api.who.pm, like this: http://api.who.pm/lowendtalk.com (You can see the parsed JSON at http://jsonviewer.stack.hu if you like.) It's a sister project of http://who.pm.
Hope it can be useful to some people.