RegexToolbox is a regular expression parser & evaluator for Apple's Dashboard. It also has a small library of commonly used expressions and sample data for you to use. RegexToolbox is my own personal tool that I've made available for anyone to benefit from. If you like it then keep using it. If you want to help with development, then please donate to ensure that future updates will be made available. If you don't feel like donating, then don't. RegexToolbox is free.