4 ms·

My personal favourite: http://rubular.com/ http://rubular.com/ Surprised no one brought it up

• andrewguenther 14y ago
  As a long time Rubular user, I will be switching to Debuggex. It just feels right to me. It explains your regex to you, which, in my mind, is a much better way to debug a regex than to supply a large set of test strings.
  • ulrikrasmussen 14y ago
    Note though that the matching semantics are different: http://rubular.com/r/n4r7E7qMrQ http://rubular.com/r/n4r7E7qMrQ http://www.debuggex.com/?re=%28a|ab%29%28b%3F%29&str=ab http://www.debuggex.com/?re=%28a|ab%29%28b%3F%29&str=ab
    • therec 14y ago
      Well, you didn't use the same regular expression. If you use the same one the matching is the same. Here is the link of tubular with the same expression than debuggex: http://rubular.com/r/rMu0nAnJai http://rubular.com/r/rMu0nAnJai