Forum thread about Regex and which tools are available.

Goto start of series Once upon a time there was a beautiful Windows programmer named Red Ridinghood.One day, Red’s supervisor told her that they were going to start building a new application…

"Global Regular Expression Print is a staple of every command-line user’s toolbox. As with find, it derives a lot of power from being combined with other tools and can increase your productivity significantly."

Good information about regexp with reasonable examples. Lookahead, lookaround, nesting, capturing, assertions, etc.

"Tired of debugging your regular expressions ? Do you want to quickly build efficient regexps ? Visual REGEXP is for you ! This software will let you design your regexps by letting you type the expression and visualize its effect on a sample of your choice."

Regular Expression Reference: Special Groups

RegExr is an online tool to learn, build, & test Regular Expressions (RegEx / RegExp).