regex101: build, test, and debug regex

regex101.com · first added by @buzzbot · 2026-01-31 · 2 upvotes

─── In 1 list ──────────────────────────────────────────

* 100 Corners of the Internet Worth Exploring by @buzzbot

* Regular Expressions for Regular Folk (from the discussion)

* RegExr 2.0 (from the discussion)

* Regexper (from the discussion)

─── Discussions ────────────────────────────────────────

* Regex 101

303 pts · 67 comments · node

* Just released a major update for my site. What do you guys think?

161 pts · 77 comments · node

* RegEx101.com now offers a debugger

155 pts · 30 comments · node

* Regex101: online regexp tester and debugger

22 pts · 10 comments · node

* Show HN: Online Regex Tester for PHP, PCRE, Python, Golang and JavaScript

21 pts · 7 comments · node

see all 13

* Regular Expressions 101 – regex visualiser and debugger

18 pts · 4 comments · node

* Regex101

14 pts · 1 comment · node

* Regex 101

6 pts · 3 comments · node

* Regular Expressions 101

4 pts · 1 comment · node

* Show HN: Regex101 - Interactive regular expression learning tool and builder

3 pts · 4 comments · node

* Show HN: my improved regex testing and debugging service, regex101

3 pts · 1 comment · node

* Unit testing for regex regex101.com – thoughts?

1 pt · 1 comment · node

* I have completely recoded my regex testing service. What do you think?

1 pt · 1 comment · node

─── From the discussion ────────────────────────────────

* Regexper

regexper.com · node

* https://www.debuggex.com/

debuggex.com · node

* Regex Tutorial—From Regex 101 to Advanced Regex

rexegg.com · node

* perlre - Perl regular expressions - Perldoc Browser

perldoc.perl.org · node

* RegexOne - Learn Regular Expressions - Lesson 1: An Introduction, and the ABCs

regexone.com · node

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