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RegExr

regexr.comOther dev tools

No liveness check has reached it yet; it is registered on GitHub and has been in the index since 8 Oct 2026. How this is checked

RegExr is an interactive browser tool for creating and testing regular expressions with real-time match results. It supports JavaScript and PHP/PCRE syntax, contextual explanations, test suites, reference material, pattern sharing, and community patterns.

Inferred · not functionally tested

FreeGPL-3.0WebCloud-managed
RegExr preview
Visit regexr.com
10.4kstars
1.0kforks
1alternative
10features
2014since

Overview

6 features

Purpose: Testing, understanding, and refining regular expressions without building a custom testing environment.

Inferred · not functionally tested

Audience: developers and people learning regular expressions

Inferred · not functionally tested

Functions: Unknown

Interfaces: API: unknown · MCP: unknown · CLI: unknown · Self-hosting: unknown

Recorded constraints: pricing: free · license: GPL-3.0 · platforms: WEB · deployment: browser, cloud_managed

Constraint provenance is unknown; confirm requirements with the publisher.

Record sources: regexr.com · github.com. These links do not verify the individual claims.

In the Other dev tools space, RegExr takes a focused approach. Inferred · not functionally tested: Testing, understanding, and refining regular expressions without building a custom testing environment. Inferred · not functionally tested: It is built as a B2B product for developers and people learning regular expressions. Basis unknown · not verified: RegExr costs nothing to use. Basis unknown · not verified: It ships for the web.

gskinner.com builds and maintains RegExr, and it first shipped in 2014. Development happens publicly on GitHub with 10.4k stars. Inferred · not functionally tested: Key capabilities include real-time matching, syntax highlighting, and regex reference.

Summary written by a language model from the project’s public pages.

Tasks: Inferred · not functionally tested

  • Real-time matching
  • Syntax highlighting
  • Regex reference
  • Contextual help
  • Test suites
  • Pattern sharing

Topics: Inferred · not functionally tested

Tags
regex-testerjavascript-regexpcredeveloper-learning

JSON profile · Text profile · Access guide

Built with & integrations

Hosting
Cloudflare
Connectors
github
Runs on
BrowserCloud-managed
Detected from
Cloudflare
cf-ray header · cf-cache-status header

Trust & compliance

License
GPL-3.0
Public signals
HTTPSFree tierGitHub · ★ 10.4k

Indexing history

1

What PulseGate has recorded for this listing

  1. Indexed8 Oct · 19:05 UTC
    Regexr seen via Saashub
    Source: Saashub · Open

Frequently asked questions about RegExr

What is RegExr?
Inferred · not functionally tested: Testing, understanding, and refining regular expressions without building a custom testing environment. It is catalogued under Other dev tools on PulseGate.
Who is RegExr for?
Inferred · not functionally tested: RegExr is a B2B product built for developers and people learning regular expressions.
Does RegExr have a free plan?
Basis unknown · not verified: Yes — RegExr is free to use.
What platforms does RegExr run on?
Basis unknown · not verified: RegExr runs on the web.
Is RegExr still maintained?
Unverified. RegExr has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What are alternatives to RegExr?
Similar projects tracked by PulseGate include RegEx Tester, Regex Tester, and regex101.RegEx TesterRegex Testerregex101
Who makes RegExr?
RegExr is developed by gskinner.com.
When did RegExr launch?
RegExr first shipped in 2014.

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