Patterns is described as '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' and is a regular expression editor in the development category. There are more than 25 alternatives to Patterns for a variety of platforms, including Windows, Web-based, Mac, Linux and Self-Hosted apps. The best Patterns alternative is regular expressions 101, which is free. Other great apps like Patterns are RegExr, Regex Forge, Expresso and RegexMate.