rubular - A ruby based regular expression editor

Akinator - Akinator is an entertainment app that acts like a digital genie that can read your mind. The game will ask you a few questions about the character you have chosen, and it will attempt to guess the character from your provided answers.

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

Trivia Crack - Produced by Etermax, Trivia Crack lets players answer trivia questions and compete against other people on mobile devices.

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.

A Google a Day - Online trivia game where you use Google's search to answer questions as fast as you can.