Is there some good visual regular expression editor? [closed]

Answer 1

There is Regexper - An Online Tool For Beautiful JavaScript Regexp Visualizations - which recently came out.

Regexper is a tool for visualizing JavaScript regular expressions online. The tool can be used as a teaching tool or simply as a tool to follow the logic of your JavaScript regex to get a better understanding of it. It might especially be useful when you have to write complex regular expressions.