a Ruby regular expression editorSee the website
DescriptionRubular is a Ruby-based regular expression editor. It's a handy way to test regular expressions as you write them. How to use Rubular: Fill in a batch of test strings into the box, then run your regular expression against it, and instantly see (visually) what is happening. 'Make Permalink' feature: Paste the link as a comment above your regex and you can easily get back to the same place later. The permalink includes your test string(s) and makes it really easy to see what was going on when you wrote it.