Learn, create, understand, test, debug, use and save regular expressions

RegexBuddy is your perfect companion for working with regular expressions. Easily create regular expressions that match exactly what you want. Clearly understand complex regexes written by others.

Use plain English building blocks instead of or in addition to the standard regex syntax. Work with any of 15 different kinds of regular expressions, called "flavors" in RegexBuddy, which RegexBuddy can emulate.

Instantly convert a regular expression you've copied from the internet to the regex flavor used by your application or programming language of choice.

See how the pattern will work with your regex flavor, and avoid surprises when implementing your regular expression. Quickly test any regular expression on sample strings and files, preventing mistakes on actual data.

Debug without guesswork by stepping through the actual matching process.

Use the regex in your source code with code snippets automatically adjusted to the particulars of C#, Visual Basic, Java, C, C++, Delphi, Perl, PHP, Python, JavaScript, VBScript, Ruby, etc. Collect and document libraries of regular expressions for future reuse.

Search and replace through files and folders with built-in grep.

Integrate RegexBuddy with your favorite searching and editing tools for instant access. Learn all there is to know about regular expressions from RegexBuddy's comprehensive documentation and detailed regular expression tutorial. Get help and discuss anything related to regular expressions on the RegexBuddy user forums