regex

regexp

regular expression

regular expressions

grep

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.

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.