Regular expression parsing

I just want to share the recently found service for working with regular expressions. Yes, this is another service. But he has a feature - it allows not only to make regular expressions, but also helps to parse the already written ones - a kind of regexp-decompiler.
The service is called Regex101 .


')
Regex101 is a service that allows you to deconstruct other people's regexps and explain the function of each operator. Links to explanations can be placed directly in the comments to the code for the convenience of teamwork. You can also test your code, while receiving in real time a full explanation of how the desired search is processed. Well, yes, on saytste there is background information and a section with questions for those who are just entering the world of "regulars".

By the way, you can choose the style of regular expressions: PHP, javascript, Python. Regulars can fumble, which can be very important for team development.