rubular - A ruby based regular expression editor
Zen Flowchart - The simplest tool to create flowcharts
RegExr - RegExr.com is an online tool to learn, build, and test Regular Expressions.
Speedy Flowchart - For developers to be able to draw flowcharts, convert them into text files and add them into there code or readme quite quickly.
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.
Wireflow - Create beautiful flowcharts