• http://www.regexper.com/
• http://www.regexr.com/
• http://regexpal.com/
• http://regex101.com/
• http://jex.im/regulex/ github

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp

参考资料

[1]. http://en.wikipedia.org/wiki/ReDoS
[2]. https://www.owasp.org/index.php/Regular_expression_Denial_of_Service_-_ReDoS