Tabwave - Replace your new tab with a mindful productive app
rubular - A ruby based regular expression editor
Reboot - It's okay to take a break
RegExr - RegExr.com is an online tool to learn, build, and test Regular Expressions.
Stretch Reminder - App that reminds you to stretch
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.