Is there a Twitter debugger like the one in Facebook or Google?

Question

Is there a markup debugging tool for Twitter like the ones on Facebook or Google?

• Facebook debugger: http://developers.facebook.com/tools/debug
• Google data testing tool: http://www.google.com/webmasters/tools/richsnippets

Answer 1

I suppose this is what you are looking for:

https://cards-dev.twitter.com/validator (Thanks to MD. Sahib Bin Mahboob for the updated link)

(previously at: https://dev.twitter.com/docs/cards/validation/validator)