How can I test the same regex against different regular expression engines?
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How can I test the same regex against different regular expression engines?
The most powerful free online regexp testing tool is by far http://regex101.com/ – lets you select the RE engine (PCRE, JavaScript, Python), has a debugger, colorizes the matches, explains the regexp on the fly, can create permalinks to the regex playground.
Other online tools:
Windows desktop tools:
Jeff Atwood [wrote about regular expressions]( post:).
Other tools recommended by SO users include: