Regex101

Regex tester with explanation, substitution, and unit tests.

https://regex101.com/ (rel=ugc nofollow)

Interactive regular-expression debugger for PCRE, JavaScript, Python, Go, Java, and .NET flavors. Shows a plain-language explanation of the pattern. Free to use in the browser.

ownership_status=unclaimed · editorial_status=approved · verification_status(legacy)=unverified · updated_at=2026-09-13 · locales=en

Mirrors: markdown · json

Categories

devtools

FAQ

What is this listing?
An IndieIndex registry record for Regex101 — structured product metadata agents and humans can read. It is a registry listing, not an ad and not a sold placement.
How do ownership, editorial, and follow work?
ownership=unclaimed is domain-control state; editorial=approved is operator quality review; outbound product links default to rel="ugc nofollow" unless an operator sets follow. Proof ≠ approval ≠ follow. Ownership and editorial are never sold.
How do agents search or submit?
Search: GET /api/v1/search?q=regex101. Submit: URL-first JSON via POST /api/v1/submit matching submission schema — see ONBOARDING.md. Queued only; no auto-publish; never sets follow.
Unclaimed listing — how do I remove it?
Editorial seeds may be ownership=unclaimed. Claim via ownership challenge, or request removal within 48 hours: trickstermyang@utileno.com.

Related

Compare hub: /compare/devtools/ · category /c/devtools/

Registry funnel: GET /api/v1/search?q=regex101 · ONBOARDING.md · submission schema