rubular - A ruby based regular expression editor
Tomato Timer - TomatoTimer is a flexible and easy to use online Pomodoro Technique Timer
RegExr - RegExr.com is an online tool to learn, build, and test Regular Expressions.
YAPA - Pomodoro timer
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.
focus booster - focus booster is a simple timer application following the 'Pomodoro technique' for time...