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| -rw-r--r-- | README.md | 1 |
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@@ -46,6 +46,7 @@ Sharing, suggestions and contributions are always welcome! Please take a look at ## Prototyping and Testing - [Debuggex](https://www.debuggex.com/) - Online visual Regex tester. +- [ExtendsClass](https://extendsclass.com/regex-tester.html) - Online visual Regex tester. - [Regexr](http://regexr.com/) - Website for interactive Regex prototyping with syntax highlighting (by @gskinner). - [Regex101](https://regex101.com/) - Online Regex tester, debugger with highlighting. - [Rubular](http://rubular.com/) - Ruby-based regular expression editor and tester. |