What is "regexbuddy"

RegexBuddy is a regular expression programming tool by Just Great Software Co. Ltd. for the Microsoft Windows operating system. It provides an interface for building, testing, and debugging regular expressions, in addition to a library of commonly used regular expressions, an interface for generating code to use regular expressions in the desired programming environment, a graphical grep tool for searching through files and directories, and an integrated forum for seeking and providing regular expression advice with other RegexBuddy users.

RegexBuddy's proprietary regular expression engine allows the software to emulate the rules and limitations of numerous popular regular expression flavors.