Hacksy by Decoded - Check if your data has been leaked & get a better password

rubular - A ruby based regular expression editor

Have I Been Zuckered - Is your phone number present within the Facebook data breach

RegExr - RegExr.com is an online tool to learn, build, and test Regular Expressions.

have i been pwned? - Check if your account has been compromised in a data breach

RegEx Generator - RegEx Generator is a simple-to-use application that comes with the brilliance of intuitive regex and is also helping you out to test the regex.