https://regexr.com/

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https://regex101.com/

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https://github.com/baryshev/TreeRoute

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http://upshots.org/php/php-regexrouter

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http://www.pyregex.com/

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http://www.phpliveregex.com/

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http://upshots.org/php/php-seriously-simple-router

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https://www.debuggex.com/

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http://www.debuggex.com/

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http://weitz.de/regex-coach/

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http://gskinner.com/RegExr/

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http://www.regexlib.com/

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