regex101

Tests, explains and debugs regular expressions across several flavors such as PCRE2, JavaScript and Python, with code export.

Artifact by regex101

IndexedLicense unknownDeveloper toolsNo sign-up

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Opens regex101.com in a new tab. Nothing to install.

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You provide: Pattern and test text
You get: Matches, explanation, code
Account: No sign-up needed
AI: No AI: a plain tool
Your input: Not stated: check the tool's privacy notes before using private data
Price: Free to use
Made with: Hosted web tool
Source: Source code not public
Link check: Answered on Oct 31, 2026

About

regex101 is a hosted web tool in the developer tools category (regex tester). It opens in your browser, so there is nothing to install. You provide pattern and test text and get matches, explanation, code. It needs no account. It is a plain tool: no AI model is involved.

Category: Developer tools · regex tester

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Details

Auth: No auth
License: License unknown
Website: regex101.com/
First seen: Oct 31, 2026
Last checked: Oct 31, 2026
Source: artifact-seed

Cite this page

regex101: free online tool. Agent Mart. https://agentmart.dev/artifacts/regex101 (last updated 2026-10-31)