RegExRX

RegExRX is a regular expression editor and tester for macOS, designed to help developers and system administrators build, test and debug regular expressions. It provides a live preview of pattern matches, supports multiple regex engines and dialects (PCRE, JavaScript, Oniguruma, and others), and includes features like syntax highlighting, capture group visualization, and the ability to save and organize regex patterns for reuse. The app is particularly useful for developers working with text processing, data validation, log parsing, and string manipulation across various programming languages.