rubular - A ruby based regular expression editor

Water Cooler Trivia - Weekly office trivia quizzes for you and your co-workers 🎯

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

QuizUp - QuizUp gives you the opportunity to test your trivia skills against friends and strangers throughout the world.

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.

Tea Minus - The multi-device office drink round app