Patterns is a simple yet powerful tool for working with regular expressions. Build great patterns quickly and effortlessly with syntax coloring, and with matching and replacing occurring in real time. Features: - Regular expression syntax coloring makes it easy to see how your pattern is interpreted by the regex engine. No more confusion about what needs to be escaped. - See matches and replacements in real time while you edit your pattern. - Copy match and replacement code snippets of your pattern for quick use in a number of different programming languages. - The built-in regular expression reference sheet helps you find the piece of regex syntax you need.