Digital Prank

Regular expressions are generally used to to search and manipulate text based on patterns and are widely used in programming languages, text-editors. Regular expressions are very powerful and there are not much interactive online applications or tools to learn easily in real-time. RegExr is a free online as well as desktop tool to edit and test Regular Expressions in real-time.

RegExr is written in Flex 3, and uses ActionScript 3’s built in RegExp engine to work. The tools has got a wonderful UI (User Interface) which has option to enter the text you want to work with and regular expression along with a output window which shows the real-time output for the expression you have entered. The tool has got a library with explanation on the right hand side which is really helpful for the users to play with and try different things. There is also a desktop version of the RegExr available which requires AIR 1.0 runtime to run which is quite good and that’s why I love this tool. If you are really looking for a nice tool to learn regular expression then you must try this tool first.