Oyster helps you interactively build and debug regular expressions.
Main features:
- Keep a library of regular expressions, match tests, and replacement patterns (locally or in iCloud).
- Interactive highlighting of regular expression, matches, and pattern application.
- Match highlighting includes group matches within overall match.
- Generate code for C#, Java, JavaScript, JSP, Objective-C (NSRegularExpression and NSPredicate), PHP, Ruby, Pearl, Python, and TCL/TK.
- Handy Regex Reference sheet to help you tune your regular expression.